Merge remote-tracking branch 'origin/master' into fix-author

author: Jisi Liu <jisi.liu@gmail.com> 2015-10-05 13:54:05 -0700
committer: Jisi Liu <jisi.liu@gmail.com> 2015-10-05 13:54:05 -0700
commit: 8d8177c75701014dfe27fec4cdd2b1647aefcb67 (patch)
tree: fdc5d0d0f2fd57f2ca641069c20b34ddf90ec919
parent: 46e8ff63cb67a6520711da5317aaaef04d0414d0 (diff)
parent: cccf6fed7e2fad1240bb48ba0c47f3978ff7433d (diff)
86 files changed, 4997 insertions, 2090 deletions
diff --git a/Makefile.am b/Makefile.am
index e4dce6e5..62233012 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -95,6 +95,7 @@ csharp_EXTRA_DIST=                                                           \
   csharp/src/Google.Protobuf.Test/TestProtos/UnittestIssues.cs               \
   csharp/src/Google.Protobuf.Test/TestProtos/UnittestProto3.cs               \
   csharp/src/Google.Protobuf.Test/TestProtos/UnittestWellKnownTypes.cs       \
+  csharp/src/Google.Protobuf.Test/WellKnownTypes/AnyTest.cs                  \
   csharp/src/Google.Protobuf.Test/WellKnownTypes/DurationTest.cs             \
   csharp/src/Google.Protobuf.Test/WellKnownTypes/TimestampTest.cs            \
   csharp/src/Google.Protobuf.Test/WellKnownTypes/WrappersTest.cs             \
@@ -149,6 +150,7 @@ csharp_EXTRA_DIST=                                                           \
   csharp/src/Google.Protobuf/Reflection/ServiceDescriptor.cs                 \
   csharp/src/Google.Protobuf/Reflection/SingleFieldAccessor.cs               \
   csharp/src/Google.Protobuf/WellKnownTypes/Any.cs                           \
+  csharp/src/Google.Protobuf/WellKnownTypes/AnyPartial.cs                    \
   csharp/src/Google.Protobuf/WellKnownTypes/Api.cs                           \
   csharp/src/Google.Protobuf/WellKnownTypes/Duration.cs                      \
   csharp/src/Google.Protobuf/WellKnownTypes/DurationPartial.cs               \
@@ -454,6 +456,7 @@ objectivec_EXTRA_DIST=                                                       \
   objectivec/Tests/GPBMessageTests+Runtime.m                                 \
   objectivec/Tests/GPBMessageTests+Serialization.m                           \
   objectivec/Tests/GPBMessageTests.m                                         \
+  objectivec/Tests/GPBObjectiveCPlusPlusTest.mm                              \
   objectivec/Tests/GPBPerfTests.m                                            \
   objectivec/Tests/GPBStringTests.m                                          \
   objectivec/Tests/GPBSwiftTests.swift                                       \
diff --git a/Protobuf.podspec b/Protobuf.podspec
index 5cfc02b4..92ff2904 100644
--- a/Protobuf.podspec
+++ b/Protobuf.podspec
@@ -5,7 +5,7 @@
 # dependent projects use the :git notation to refer to the library.
 Pod::Spec.new do |s|
   s.name     = 'Protobuf'
-  s.version  = '3.0.0-alpha-4'
+  s.version  = '3.0.0-alpha-4.1'
   s.summary  = 'Protocol Buffers v.3 runtime library for Objective-C.'
   s.homepage = 'https://github.com/google/protobuf'
   s.license  = 'New BSD'
@@ -21,7 +21,7 @@ Pod::Spec.new do |s|
                    'objectivec/google/protobuf/SourceContext.pbobjc.{h,m}',
                    'objectivec/google/protobuf/Struct.pbobjc.{h,m}',
                    'objectivec/google/protobuf/Timestamp.pbobjc.h',
-                   'objectivec/google/protobuf/Type.pbobjc.{h,m}'
+                   'objectivec/google/protobuf/Type.pbobjc.{h,m}',
                    'objectivec/google/protobuf/Wrappers.pbobjc.{h,m}'
   # Timestamp.pbobjc.m and Duration.pbobjc.m are #imported by GPBWellKnownTypes.m. So we can't
   # compile them (duplicate symbols), but we need them available for the importing:
diff --git a/cmake/libprotoc.cmake b/cmake/libprotoc.cmake
index 7aa92ee1..35e5faf2 100644
--- a/cmake/libprotoc.cmake
+++ b/cmake/libprotoc.cmake
@@ -14,6 +14,7 @@ set(libprotoc_files
   ${protobuf_source_dir}/src/google/protobuf/compiler/cpp/cpp_primitive_field.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/cpp/cpp_service.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/cpp/cpp_string_field.cc
+  ${protobuf_source_dir}/src/google/protobuf/compiler/csharp/csharp_doc_comment.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/csharp/csharp_enum.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/csharp/csharp_enum_field.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/csharp/csharp_field_base.cc
diff --git a/csharp/generate_protos.sh b/csharp/generate_protos.sh
index 0d217a9d..3a556b0e 100755
--- a/csharp/generate_protos.sh
+++ b/csharp/generate_protos.sh
@@ -35,11 +35,10 @@ if [ -z "$PROTOC" ]; then
   fi
 fi
 
-# Descriptor proto
-$PROTOC -Isrc --csharp_out=csharp/src/Google.Protobuf/Reflection \
-    src/google/protobuf/descriptor.proto
-
-$PROTOC -Isrc --csharp_out=csharp/src/Google.Protobuf/WellKnownTypes \
+# descriptor.proto and well-known types
+$PROTOC -Isrc --csharp_out=csharp/src/Google.Protobuf \
+    --csharp_opt=base_namespace=Google.Protobuf \
+    src/google/protobuf/descriptor.proto \
     src/google/protobuf/any.proto \
     src/google/protobuf/api.proto \
     src/google/protobuf/duration.proto \
@@ -51,15 +50,18 @@ $PROTOC -Isrc --csharp_out=csharp/src/Google.Protobuf/WellKnownTypes \
     src/google/protobuf/type.proto \
     src/google/protobuf/wrappers.proto
 
-$PROTOC -Isrc --csharp_out=csharp/src/Google.Protobuf.Test/TestProtos \
+# Test protos where the namespace matches the target location
+$PROTOC -Isrc --csharp_out=csharp/src/Google.Protobuf.Test \
+    --csharp_opt=base_namespace=Google.Protobuf \
     src/google/protobuf/map_unittest_proto3.proto \
     src/google/protobuf/unittest_proto3.proto \
     src/google/protobuf/unittest_import_proto3.proto \
     src/google/protobuf/unittest_import_public_proto3.proto \
     src/google/protobuf/unittest_well_known_types.proto
 
-
-$PROTOC -Icsharp/protos --csharp_out=csharp/src/Google.Protobuf.Test/TestProtos \
+# Different base namespace to the protos above
+$PROTOC -Icsharp/protos --csharp_out=csharp/src/Google.Protobuf.Test \
+    --csharp_opt=base_namespace=UnitTest.Issues \
     csharp/protos/unittest_issues.proto
 
 # AddressBook sample protos
diff --git a/csharp/src/AddressBook/Addressbook.cs b/csharp/src/AddressBook/Addressbook.cs
index f2be5bae..a830418a 100644
--- a/csharp/src/AddressBook/Addressbook.cs
+++ b/csharp/src/AddressBook/Addressbook.cs
@@ -9,10 +9,12 @@ using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
 namespace Google.Protobuf.Examples.AddressBook {
 
+  /// <summary>Holder for reflection information generated from addressbook.proto</summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public static partial class Addressbook {
 
     #region Descriptor
+    /// <summary>File descriptor for addressbook.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
@@ -21,14 +23,14 @@ namespace Google.Protobuf.Examples.AddressBook {
     static Addressbook() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "ChFhZGRyZXNzYm9vay5wcm90bxIIdHV0b3JpYWwi1QEKBlBlcnNvbhIMCgRu", 
-            "YW1lGAEgASgJEgoKAmlkGAIgASgFEg0KBWVtYWlsGAMgASgJEiwKBnBob25l", 
-            "cxgEIAMoCzIcLnR1dG9yaWFsLlBlcnNvbi5QaG9uZU51bWJlchpHCgtQaG9u", 
-            "ZU51bWJlchIOCgZudW1iZXIYASABKAkSKAoEdHlwZRgCIAEoDjIaLnR1dG9y", 
-            "aWFsLlBlcnNvbi5QaG9uZVR5cGUiKwoJUGhvbmVUeXBlEgoKBk1PQklMRRAA", 
-            "EggKBEhPTUUQARIICgRXT1JLEAIiLwoLQWRkcmVzc0Jvb2sSIAoGcGVvcGxl", 
-            "GAEgAygLMhAudHV0b3JpYWwuUGVyc29uQlAKFGNvbS5leGFtcGxlLnR1dG9y", 
-            "aWFsQhFBZGRyZXNzQm9va1Byb3Rvc6oCJEdvb2dsZS5Qcm90b2J1Zi5FeGFt", 
+            "ChFhZGRyZXNzYm9vay5wcm90bxIIdHV0b3JpYWwi1QEKBlBlcnNvbhIMCgRu",
+            "YW1lGAEgASgJEgoKAmlkGAIgASgFEg0KBWVtYWlsGAMgASgJEiwKBnBob25l",
+            "cxgEIAMoCzIcLnR1dG9yaWFsLlBlcnNvbi5QaG9uZU51bWJlchpHCgtQaG9u",
+            "ZU51bWJlchIOCgZudW1iZXIYASABKAkSKAoEdHlwZRgCIAEoDjIaLnR1dG9y",
+            "aWFsLlBlcnNvbi5QaG9uZVR5cGUiKwoJUGhvbmVUeXBlEgoKBk1PQklMRRAA",
+            "EggKBEhPTUUQARIICgRXT1JLEAIiLwoLQWRkcmVzc0Jvb2sSIAoGcGVvcGxl",
+            "GAEgAygLMhAudHV0b3JpYWwuUGVyc29uQlAKFGNvbS5leGFtcGxlLnR1dG9y",
+            "aWFsQhFBZGRyZXNzQm9va1Byb3Rvc6oCJEdvb2dsZS5Qcm90b2J1Zi5FeGFt",
             "cGxlcy5BZGRyZXNzQm9va2IGcHJvdG8z"));
       descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
           new pbr::FileDescriptor[] { },
@@ -71,6 +73,7 @@ namespace Google.Protobuf.Examples.AddressBook {
       return new Person(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
     public string Name {
@@ -80,8 +83,12 @@ namespace Google.Protobuf.Examples.AddressBook {
       }
     }
 
+    /// <summary>Field number for the "id" field.</summary>
     public const int IdFieldNumber = 2;
     private int id_;
+    /// <summary>
+    ///  Unique ID number for this person.
+    /// </summary>
     public int Id {
       get { return id_; }
       set {
@@ -89,6 +96,7 @@ namespace Google.Protobuf.Examples.AddressBook {
       }
     }
 
+    /// <summary>Field number for the "email" field.</summary>
     public const int EmailFieldNumber = 3;
     private string email_ = "";
     public string Email {
@@ -98,6 +106,7 @@ namespace Google.Protobuf.Examples.AddressBook {
       }
     }
 
+    /// <summary>Field number for the "phones" field.</summary>
     public const int PhonesFieldNumber = 4;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Examples.AddressBook.Person.Types.PhoneNumber> _repeated_phones_codec
         = pb::FieldCodec.ForMessage(34, global::Google.Protobuf.Examples.AddressBook.Person.Types.PhoneNumber.Parser);
@@ -212,6 +221,7 @@ namespace Google.Protobuf.Examples.AddressBook {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the Person message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
       public enum PhoneType {
@@ -248,6 +258,7 @@ namespace Google.Protobuf.Examples.AddressBook {
           return new PhoneNumber(this);
         }
 
+        /// <summary>Field number for the "number" field.</summary>
         public const int NumberFieldNumber = 1;
         private string number_ = "";
         public string Number {
@@ -257,6 +268,7 @@ namespace Google.Protobuf.Examples.AddressBook {
           }
         }
 
+        /// <summary>Field number for the "type" field.</summary>
         public const int TypeFieldNumber = 2;
         private global::Google.Protobuf.Examples.AddressBook.Person.Types.PhoneType type_ = global::Google.Protobuf.Examples.AddressBook.Person.Types.PhoneType.MOBILE;
         public global::Google.Protobuf.Examples.AddressBook.Person.Types.PhoneType Type {
@@ -353,6 +365,9 @@ namespace Google.Protobuf.Examples.AddressBook {
 
   }
 
+  /// <summary>
+  ///  Our address book file is just one of these.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class AddressBook : pb::IMessage<AddressBook> {
     private static readonly pb::MessageParser<AddressBook> _parser = new pb::MessageParser<AddressBook>(() => new AddressBook());
@@ -380,6 +395,7 @@ namespace Google.Protobuf.Examples.AddressBook {
       return new AddressBook(this);
     }
 
+    /// <summary>Field number for the "people" field.</summary>
     public const int PeopleFieldNumber = 1;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Examples.AddressBook.Person> _repeated_people_codec
         = pb::FieldCodec.ForMessage(10, global::Google.Protobuf.Examples.AddressBook.Person.Parser);
diff --git a/csharp/src/Google.Protobuf.Conformance/Conformance.cs b/csharp/src/Google.Protobuf.Conformance/Conformance.cs
index e905d4e4..dfd331ae 100644
--- a/csharp/src/Google.Protobuf.Conformance/Conformance.cs
+++ b/csharp/src/Google.Protobuf.Conformance/Conformance.cs
@@ -9,10 +9,12 @@ using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
 namespace Conformance {
 
+  /// <summary>Holder for reflection information generated from conformance.proto</summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public static partial class Conformance {
 
     #region Descriptor
+    /// <summary>File descriptor for conformance.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
@@ -21,116 +23,116 @@ namespace Conformance {
     static Conformance() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "ChFjb25mb3JtYW5jZS5wcm90bxILY29uZm9ybWFuY2UijQEKEkNvbmZvcm1h", 
-            "bmNlUmVxdWVzdBIaChBwcm90b2J1Zl9wYXlsb2FkGAEgASgMSAASFgoManNv", 
-            "bl9wYXlsb2FkGAIgASgJSAASOAoXcmVxdWVzdGVkX291dHB1dF9mb3JtYXQY", 
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-            "bnQzMhgBIAEoBRIWCg5vcHRpb25hbF9pbnQ2NBgCIAEoAxIXCg9vcHRpb25h", 
-            "bF91aW50MzIYAyABKA0SFwoPb3B0aW9uYWxfdWludDY0GAQgASgEEhcKD29w", 
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+            "Gy5jb25mb3JtYW5jZS5Gb3JlaWduTWVzc2FnZToCOAEaYAoYTWFwU3RyaW5n",
+            "TmVzdGVkRW51bUVudHJ5EgsKA2tleRgBIAEoCRIzCgV2YWx1ZRgCIAEoDjIk",
+            "LmNvbmZvcm1hbmNlLlRlc3RBbGxUeXBlcy5OZXN0ZWRFbnVtOgI4ARpVChlN",
+            "YXBTdHJpbmdGb3JlaWduRW51bUVudHJ5EgsKA2tleRgBIAEoCRInCgV2YWx1",
+            "ZRgCIAEoDjIYLmNvbmZvcm1hbmNlLkZvcmVpZ25FbnVtOgI4ASI5CgpOZXN0",
+            "ZWRFbnVtEgcKA0ZPTxAAEgcKA0JBUhABEgcKA0JBWhACEhAKA05FRxD/////",
+            "//////8BQg0KC29uZW9mX2ZpZWxkIhsKDkZvcmVpZ25NZXNzYWdlEgkKAWMY",
+            "ASABKAUqNQoKV2lyZUZvcm1hdBIPCgtVTlNQRUNJRklFRBAAEgwKCFBST1RP",
+            "QlVGEAESCAoESlNPThACKkAKC0ZvcmVpZ25FbnVtEg8KC0ZPUkVJR05fRk9P",
+            "EAASDwoLRk9SRUlHTl9CQVIQARIPCgtGT1JFSUdOX0JBWhACQiEKH2NvbS5n",
             "b29nbGUucHJvdG9idWYuY29uZm9ybWFuY2ViBnByb3RvMw=="));
       descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
           new pbr::FileDescriptor[] { },
@@ -161,6 +163,12 @@ namespace Conformance {
   #endregion
 
   #region Messages
+  /// <summary>
+  ///  Represents a single test case's input.  The testee should:
+  ///    1. parse this proto (which should always succeed)
+  ///    2. parse the protobuf or JSON payload in "payload" (which may fail)
+  ///    3. if the parse succeeded, serialize the message in the requested format.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class ConformanceRequest : pb::IMessage<ConformanceRequest> {
     private static readonly pb::MessageParser<ConformanceRequest> _parser = new pb::MessageParser<ConformanceRequest>(() => new ConformanceRequest());
@@ -197,6 +205,7 @@ namespace Conformance {
       return new ConformanceRequest(this);
     }
 
+    /// <summary>Field number for the "protobuf_payload" field.</summary>
     public const int ProtobufPayloadFieldNumber = 1;
     public pb::ByteString ProtobufPayload {
       get { return payloadCase_ == PayloadOneofCase.ProtobufPayload ? (pb::ByteString) payload_ : pb::ByteString.Empty; }
@@ -206,6 +215,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "json_payload" field.</summary>
     public const int JsonPayloadFieldNumber = 2;
     public string JsonPayload {
       get { return payloadCase_ == PayloadOneofCase.JsonPayload ? (string) payload_ : ""; }
@@ -215,8 +225,12 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "requested_output_format" field.</summary>
     public const int RequestedOutputFormatFieldNumber = 3;
     private global::Conformance.WireFormat requestedOutputFormat_ = global::Conformance.WireFormat.UNSPECIFIED;
+    /// <summary>
+    ///  Which format should the testee serialize its message to?
+    /// </summary>
     public global::Conformance.WireFormat RequestedOutputFormat {
       get { return requestedOutputFormat_; }
       set {
@@ -225,6 +239,7 @@ namespace Conformance {
     }
 
     private object payload_;
+    /// <summary>Enum of possible cases for the "payload" oneof.</summary>
     public enum PayloadOneofCase {
       None = 0,
       ProtobufPayload = 1,
@@ -341,6 +356,9 @@ namespace Conformance {
 
   }
 
+  /// <summary>
+  ///  Represents a single test case's output.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class ConformanceResponse : pb::IMessage<ConformanceResponse> {
     private static readonly pb::MessageParser<ConformanceResponse> _parser = new pb::MessageParser<ConformanceResponse>(() => new ConformanceResponse());
@@ -385,7 +403,14 @@ namespace Conformance {
       return new ConformanceResponse(this);
     }
 
+    /// <summary>Field number for the "parse_error" field.</summary>
     public const int ParseErrorFieldNumber = 1;
+    /// <summary>
+    ///  This string should be set to indicate parsing failed.  The string can
+    ///  provide more information about the parse error if it is available.
+    ///  Setting this string does not necessarily mean the testee failed the
+    ///  test.  Some of the test cases are intentionally invalid input.
+    /// </summary>
     public string ParseError {
       get { return resultCase_ == ResultOneofCase.ParseError ? (string) result_ : ""; }
       set {
@@ -394,7 +419,13 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "runtime_error" field.</summary>
     public const int RuntimeErrorFieldNumber = 2;
+    /// <summary>
+    ///  This should be set if some other error occurred.  This will always
+    ///  indicate that the test failed.  The string can provide more information
+    ///  about the failure.
+    /// </summary>
     public string RuntimeError {
       get { return resultCase_ == ResultOneofCase.RuntimeError ? (string) result_ : ""; }
       set {
@@ -403,7 +434,12 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "protobuf_payload" field.</summary>
     public const int ProtobufPayloadFieldNumber = 3;
+    /// <summary>
+    ///  If the input was successfully parsed and the requested output was
+    ///  protobuf, serialize it to protobuf and set it in this field.
+    /// </summary>
     public pb::ByteString ProtobufPayload {
       get { return resultCase_ == ResultOneofCase.ProtobufPayload ? (pb::ByteString) result_ : pb::ByteString.Empty; }
       set {
@@ -412,7 +448,12 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "json_payload" field.</summary>
     public const int JsonPayloadFieldNumber = 4;
+    /// <summary>
+    ///  If the input was successfully parsed and the requested output was JSON,
+    ///  serialize to JSON and set it in this field.
+    /// </summary>
     public string JsonPayload {
       get { return resultCase_ == ResultOneofCase.JsonPayload ? (string) result_ : ""; }
       set {
@@ -421,7 +462,12 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "skipped" field.</summary>
     public const int SkippedFieldNumber = 5;
+    /// <summary>
+    ///  For when the testee skipped the test, likely because a certain feature
+    ///  wasn't supported, like JSON input/output.
+    /// </summary>
     public string Skipped {
       get { return resultCase_ == ResultOneofCase.Skipped ? (string) result_ : ""; }
       set {
@@ -431,6 +477,7 @@ namespace Conformance {
     }
 
     private object result_;
+    /// <summary>Enum of possible cases for the "result" oneof.</summary>
     public enum ResultOneofCase {
       None = 0,
       ParseError = 1,
@@ -582,6 +629,10 @@ namespace Conformance {
 
   }
 
+  /// <summary>
+  ///  This proto includes every type of field in both singular and repeated
+  ///  forms.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestAllTypes : pb::IMessage<TestAllTypes> {
     private static readonly pb::MessageParser<TestAllTypes> _parser = new pb::MessageParser<TestAllTypes>(() => new TestAllTypes());
@@ -685,8 +736,12 @@ namespace Conformance {
       return new TestAllTypes(this);
     }
 
+    /// <summary>Field number for the "optional_int32" field.</summary>
     public const int OptionalInt32FieldNumber = 1;
     private int optionalInt32_;
+    /// <summary>
+    ///  Singular
+    /// </summary>
     public int OptionalInt32 {
       get { return optionalInt32_; }
       set {
@@ -694,6 +749,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_int64" field.</summary>
     public const int OptionalInt64FieldNumber = 2;
     private long optionalInt64_;
     public long OptionalInt64 {
@@ -703,6 +759,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_uint32" field.</summary>
     public const int OptionalUint32FieldNumber = 3;
     private uint optionalUint32_;
     public uint OptionalUint32 {
@@ -712,6 +769,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_uint64" field.</summary>
     public const int OptionalUint64FieldNumber = 4;
     private ulong optionalUint64_;
     public ulong OptionalUint64 {
@@ -721,6 +779,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_sint32" field.</summary>
     public const int OptionalSint32FieldNumber = 5;
     private int optionalSint32_;
     public int OptionalSint32 {
@@ -730,6 +789,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_sint64" field.</summary>
     public const int OptionalSint64FieldNumber = 6;
     private long optionalSint64_;
     public long OptionalSint64 {
@@ -739,6 +799,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_fixed32" field.</summary>
     public const int OptionalFixed32FieldNumber = 7;
     private uint optionalFixed32_;
     public uint OptionalFixed32 {
@@ -748,6 +809,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_fixed64" field.</summary>
     public const int OptionalFixed64FieldNumber = 8;
     private ulong optionalFixed64_;
     public ulong OptionalFixed64 {
@@ -757,6 +819,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_sfixed32" field.</summary>
     public const int OptionalSfixed32FieldNumber = 9;
     private int optionalSfixed32_;
     public int OptionalSfixed32 {
@@ -766,6 +829,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_sfixed64" field.</summary>
     public const int OptionalSfixed64FieldNumber = 10;
     private long optionalSfixed64_;
     public long OptionalSfixed64 {
@@ -775,6 +839,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_float" field.</summary>
     public const int OptionalFloatFieldNumber = 11;
     private float optionalFloat_;
     public float OptionalFloat {
@@ -784,6 +849,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_double" field.</summary>
     public const int OptionalDoubleFieldNumber = 12;
     private double optionalDouble_;
     public double OptionalDouble {
@@ -793,6 +859,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_bool" field.</summary>
     public const int OptionalBoolFieldNumber = 13;
     private bool optionalBool_;
     public bool OptionalBool {
@@ -802,6 +869,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_string" field.</summary>
     public const int OptionalStringFieldNumber = 14;
     private string optionalString_ = "";
     public string OptionalString {
@@ -811,6 +879,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_bytes" field.</summary>
     public const int OptionalBytesFieldNumber = 15;
     private pb::ByteString optionalBytes_ = pb::ByteString.Empty;
     public pb::ByteString OptionalBytes {
@@ -820,6 +889,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_nested_message" field.</summary>
     public const int OptionalNestedMessageFieldNumber = 18;
     private global::Conformance.TestAllTypes.Types.NestedMessage optionalNestedMessage_;
     public global::Conformance.TestAllTypes.Types.NestedMessage OptionalNestedMessage {
@@ -829,6 +899,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_foreign_message" field.</summary>
     public const int OptionalForeignMessageFieldNumber = 19;
     private global::Conformance.ForeignMessage optionalForeignMessage_;
     public global::Conformance.ForeignMessage OptionalForeignMessage {
@@ -838,6 +909,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_nested_enum" field.</summary>
     public const int OptionalNestedEnumFieldNumber = 21;
     private global::Conformance.TestAllTypes.Types.NestedEnum optionalNestedEnum_ = global::Conformance.TestAllTypes.Types.NestedEnum.FOO;
     public global::Conformance.TestAllTypes.Types.NestedEnum OptionalNestedEnum {
@@ -847,6 +919,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_foreign_enum" field.</summary>
     public const int OptionalForeignEnumFieldNumber = 22;
     private global::Conformance.ForeignEnum optionalForeignEnum_ = global::Conformance.ForeignEnum.FOREIGN_FOO;
     public global::Conformance.ForeignEnum OptionalForeignEnum {
@@ -856,6 +929,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_string_piece" field.</summary>
     public const int OptionalStringPieceFieldNumber = 24;
     private string optionalStringPiece_ = "";
     public string OptionalStringPiece {
@@ -865,6 +939,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "optional_cord" field.</summary>
     public const int OptionalCordFieldNumber = 25;
     private string optionalCord_ = "";
     public string OptionalCord {
@@ -874,6 +949,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "recursive_message" field.</summary>
     public const int RecursiveMessageFieldNumber = 27;
     private global::Conformance.TestAllTypes recursiveMessage_;
     public global::Conformance.TestAllTypes RecursiveMessage {
@@ -883,14 +959,19 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "repeated_int32" field.</summary>
     public const int RepeatedInt32FieldNumber = 31;
     private static readonly pb::FieldCodec<int> _repeated_repeatedInt32_codec
         = pb::FieldCodec.ForInt32(250);
     private readonly pbc::RepeatedField<int> repeatedInt32_ = new pbc::RepeatedField<int>();
+    /// <summary>
+    ///  Repeated
+    /// </summary>
     public pbc::RepeatedField<int> RepeatedInt32 {
       get { return repeatedInt32_; }
     }
 
+    /// <summary>Field number for the "repeated_int64" field.</summary>
     public const int RepeatedInt64FieldNumber = 32;
     private static readonly pb::FieldCodec<long> _repeated_repeatedInt64_codec
         = pb::FieldCodec.ForInt64(258);
@@ -899,6 +980,7 @@ namespace Conformance {
       get { return repeatedInt64_; }
     }
 
+    /// <summary>Field number for the "repeated_uint32" field.</summary>
     public const int RepeatedUint32FieldNumber = 33;
     private static readonly pb::FieldCodec<uint> _repeated_repeatedUint32_codec
         = pb::FieldCodec.ForUInt32(266);
@@ -907,6 +989,7 @@ namespace Conformance {
       get { return repeatedUint32_; }
     }
 
+    /// <summary>Field number for the "repeated_uint64" field.</summary>
     public const int RepeatedUint64FieldNumber = 34;
     private static readonly pb::FieldCodec<ulong> _repeated_repeatedUint64_codec
         = pb::FieldCodec.ForUInt64(274);
@@ -915,6 +998,7 @@ namespace Conformance {
       get { return repeatedUint64_; }
     }
 
+    /// <summary>Field number for the "repeated_sint32" field.</summary>
     public const int RepeatedSint32FieldNumber = 35;
     private static readonly pb::FieldCodec<int> _repeated_repeatedSint32_codec
         = pb::FieldCodec.ForSInt32(282);
@@ -923,6 +1007,7 @@ namespace Conformance {
       get { return repeatedSint32_; }
     }
 
+    /// <summary>Field number for the "repeated_sint64" field.</summary>
     public const int RepeatedSint64FieldNumber = 36;
     private static readonly pb::FieldCodec<long> _repeated_repeatedSint64_codec
         = pb::FieldCodec.ForSInt64(290);
@@ -931,6 +1016,7 @@ namespace Conformance {
       get { return repeatedSint64_; }
     }
 
+    /// <summary>Field number for the "repeated_fixed32" field.</summary>
     public const int RepeatedFixed32FieldNumber = 37;
     private static readonly pb::FieldCodec<uint> _repeated_repeatedFixed32_codec
         = pb::FieldCodec.ForFixed32(298);
@@ -939,6 +1025,7 @@ namespace Conformance {
       get { return repeatedFixed32_; }
     }
 
+    /// <summary>Field number for the "repeated_fixed64" field.</summary>
     public const int RepeatedFixed64FieldNumber = 38;
     private static readonly pb::FieldCodec<ulong> _repeated_repeatedFixed64_codec
         = pb::FieldCodec.ForFixed64(306);
@@ -947,6 +1034,7 @@ namespace Conformance {
       get { return repeatedFixed64_; }
     }
 
+    /// <summary>Field number for the "repeated_sfixed32" field.</summary>
     public const int RepeatedSfixed32FieldNumber = 39;
     private static readonly pb::FieldCodec<int> _repeated_repeatedSfixed32_codec
         = pb::FieldCodec.ForSFixed32(314);
@@ -955,6 +1043,7 @@ namespace Conformance {
       get { return repeatedSfixed32_; }
     }
 
+    /// <summary>Field number for the "repeated_sfixed64" field.</summary>
     public const int RepeatedSfixed64FieldNumber = 40;
     private static readonly pb::FieldCodec<long> _repeated_repeatedSfixed64_codec
         = pb::FieldCodec.ForSFixed64(322);
@@ -963,6 +1052,7 @@ namespace Conformance {
       get { return repeatedSfixed64_; }
     }
 
+    /// <summary>Field number for the "repeated_float" field.</summary>
     public const int RepeatedFloatFieldNumber = 41;
     private static readonly pb::FieldCodec<float> _repeated_repeatedFloat_codec
         = pb::FieldCodec.ForFloat(330);
@@ -971,6 +1061,7 @@ namespace Conformance {
       get { return repeatedFloat_; }
     }
 
+    /// <summary>Field number for the "repeated_double" field.</summary>
     public const int RepeatedDoubleFieldNumber = 42;
     private static readonly pb::FieldCodec<double> _repeated_repeatedDouble_codec
         = pb::FieldCodec.ForDouble(338);
@@ -979,6 +1070,7 @@ namespace Conformance {
       get { return repeatedDouble_; }
     }
 
+    /// <summary>Field number for the "repeated_bool" field.</summary>
     public const int RepeatedBoolFieldNumber = 43;
     private static readonly pb::FieldCodec<bool> _repeated_repeatedBool_codec
         = pb::FieldCodec.ForBool(346);
@@ -987,6 +1079,7 @@ namespace Conformance {
       get { return repeatedBool_; }
     }
 
+    /// <summary>Field number for the "repeated_string" field.</summary>
     public const int RepeatedStringFieldNumber = 44;
     private static readonly pb::FieldCodec<string> _repeated_repeatedString_codec
         = pb::FieldCodec.ForString(354);
@@ -995,6 +1088,7 @@ namespace Conformance {
       get { return repeatedString_; }
     }
 
+    /// <summary>Field number for the "repeated_bytes" field.</summary>
     public const int RepeatedBytesFieldNumber = 45;
     private static readonly pb::FieldCodec<pb::ByteString> _repeated_repeatedBytes_codec
         = pb::FieldCodec.ForBytes(362);
@@ -1003,6 +1097,7 @@ namespace Conformance {
       get { return repeatedBytes_; }
     }
 
+    /// <summary>Field number for the "repeated_nested_message" field.</summary>
     public const int RepeatedNestedMessageFieldNumber = 48;
     private static readonly pb::FieldCodec<global::Conformance.TestAllTypes.Types.NestedMessage> _repeated_repeatedNestedMessage_codec
         = pb::FieldCodec.ForMessage(386, global::Conformance.TestAllTypes.Types.NestedMessage.Parser);
@@ -1011,6 +1106,7 @@ namespace Conformance {
       get { return repeatedNestedMessage_; }
     }
 
+    /// <summary>Field number for the "repeated_foreign_message" field.</summary>
     public const int RepeatedForeignMessageFieldNumber = 49;
     private static readonly pb::FieldCodec<global::Conformance.ForeignMessage> _repeated_repeatedForeignMessage_codec
         = pb::FieldCodec.ForMessage(394, global::Conformance.ForeignMessage.Parser);
@@ -1019,6 +1115,7 @@ namespace Conformance {
       get { return repeatedForeignMessage_; }
     }
 
+    /// <summary>Field number for the "repeated_nested_enum" field.</summary>
     public const int RepeatedNestedEnumFieldNumber = 51;
     private static readonly pb::FieldCodec<global::Conformance.TestAllTypes.Types.NestedEnum> _repeated_repeatedNestedEnum_codec
         = pb::FieldCodec.ForEnum(410, x => (int) x, x => (global::Conformance.TestAllTypes.Types.NestedEnum) x);
@@ -1027,6 +1124,7 @@ namespace Conformance {
       get { return repeatedNestedEnum_; }
     }
 
+    /// <summary>Field number for the "repeated_foreign_enum" field.</summary>
     public const int RepeatedForeignEnumFieldNumber = 52;
     private static readonly pb::FieldCodec<global::Conformance.ForeignEnum> _repeated_repeatedForeignEnum_codec
         = pb::FieldCodec.ForEnum(418, x => (int) x, x => (global::Conformance.ForeignEnum) x);
@@ -1035,6 +1133,7 @@ namespace Conformance {
       get { return repeatedForeignEnum_; }
     }
 
+    /// <summary>Field number for the "repeated_string_piece" field.</summary>
     public const int RepeatedStringPieceFieldNumber = 54;
     private static readonly pb::FieldCodec<string> _repeated_repeatedStringPiece_codec
         = pb::FieldCodec.ForString(434);
@@ -1043,6 +1142,7 @@ namespace Conformance {
       get { return repeatedStringPiece_; }
     }
 
+    /// <summary>Field number for the "repeated_cord" field.</summary>
     public const int RepeatedCordFieldNumber = 55;
     private static readonly pb::FieldCodec<string> _repeated_repeatedCord_codec
         = pb::FieldCodec.ForString(442);
@@ -1051,14 +1151,19 @@ namespace Conformance {
       get { return repeatedCord_; }
     }
 
+    /// <summary>Field number for the "map_int32_int32" field.</summary>
     public const int MapInt32Int32FieldNumber = 56;
     private static readonly pbc::MapField<int, int>.Codec _map_mapInt32Int32_codec
         = new pbc::MapField<int, int>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForInt32(16), 450);
     private readonly pbc::MapField<int, int> mapInt32Int32_ = new pbc::MapField<int, int>();
+    /// <summary>
+    ///  Map
+    /// </summary>
     public pbc::MapField<int, int> MapInt32Int32 {
       get { return mapInt32Int32_; }
     }
 
+    /// <summary>Field number for the "map_int64_int64" field.</summary>
     public const int MapInt64Int64FieldNumber = 57;
     private static readonly pbc::MapField<long, long>.Codec _map_mapInt64Int64_codec
         = new pbc::MapField<long, long>.Codec(pb::FieldCodec.ForInt64(8), pb::FieldCodec.ForInt64(16), 458);
@@ -1067,6 +1172,7 @@ namespace Conformance {
       get { return mapInt64Int64_; }
     }
 
+    /// <summary>Field number for the "map_uint32_uint32" field.</summary>
     public const int MapUint32Uint32FieldNumber = 58;
     private static readonly pbc::MapField<uint, uint>.Codec _map_mapUint32Uint32_codec
         = new pbc::MapField<uint, uint>.Codec(pb::FieldCodec.ForUInt32(8), pb::FieldCodec.ForUInt32(16), 466);
@@ -1075,6 +1181,7 @@ namespace Conformance {
       get { return mapUint32Uint32_; }
     }
 
+    /// <summary>Field number for the "map_uint64_uint64" field.</summary>
     public const int MapUint64Uint64FieldNumber = 59;
     private static readonly pbc::MapField<ulong, ulong>.Codec _map_mapUint64Uint64_codec
         = new pbc::MapField<ulong, ulong>.Codec(pb::FieldCodec.ForUInt64(8), pb::FieldCodec.ForUInt64(16), 474);
@@ -1083,6 +1190,7 @@ namespace Conformance {
       get { return mapUint64Uint64_; }
     }
 
+    /// <summary>Field number for the "map_sint32_sint32" field.</summary>
     public const int MapSint32Sint32FieldNumber = 60;
     private static readonly pbc::MapField<int, int>.Codec _map_mapSint32Sint32_codec
         = new pbc::MapField<int, int>.Codec(pb::FieldCodec.ForSInt32(8), pb::FieldCodec.ForSInt32(16), 482);
@@ -1091,6 +1199,7 @@ namespace Conformance {
       get { return mapSint32Sint32_; }
     }
 
+    /// <summary>Field number for the "map_sint64_sint64" field.</summary>
     public const int MapSint64Sint64FieldNumber = 61;
     private static readonly pbc::MapField<long, long>.Codec _map_mapSint64Sint64_codec
         = new pbc::MapField<long, long>.Codec(pb::FieldCodec.ForSInt64(8), pb::FieldCodec.ForSInt64(16), 490);
@@ -1099,6 +1208,7 @@ namespace Conformance {
       get { return mapSint64Sint64_; }
     }
 
+    /// <summary>Field number for the "map_fixed32_fixed32" field.</summary>
     public const int MapFixed32Fixed32FieldNumber = 62;
     private static readonly pbc::MapField<uint, uint>.Codec _map_mapFixed32Fixed32_codec
         = new pbc::MapField<uint, uint>.Codec(pb::FieldCodec.ForFixed32(13), pb::FieldCodec.ForFixed32(21), 498);
@@ -1107,6 +1217,7 @@ namespace Conformance {
       get { return mapFixed32Fixed32_; }
     }
 
+    /// <summary>Field number for the "map_fixed64_fixed64" field.</summary>
     public const int MapFixed64Fixed64FieldNumber = 63;
     private static readonly pbc::MapField<ulong, ulong>.Codec _map_mapFixed64Fixed64_codec
         = new pbc::MapField<ulong, ulong>.Codec(pb::FieldCodec.ForFixed64(9), pb::FieldCodec.ForFixed64(17), 506);
@@ -1115,6 +1226,7 @@ namespace Conformance {
       get { return mapFixed64Fixed64_; }
     }
 
+    /// <summary>Field number for the "map_sfixed32_sfixed32" field.</summary>
     public const int MapSfixed32Sfixed32FieldNumber = 64;
     private static readonly pbc::MapField<int, int>.Codec _map_mapSfixed32Sfixed32_codec
         = new pbc::MapField<int, int>.Codec(pb::FieldCodec.ForSFixed32(13), pb::FieldCodec.ForSFixed32(21), 514);
@@ -1123,6 +1235,7 @@ namespace Conformance {
       get { return mapSfixed32Sfixed32_; }
     }
 
+    /// <summary>Field number for the "map_sfixed64_sfixed64" field.</summary>
     public const int MapSfixed64Sfixed64FieldNumber = 65;
     private static readonly pbc::MapField<long, long>.Codec _map_mapSfixed64Sfixed64_codec
         = new pbc::MapField<long, long>.Codec(pb::FieldCodec.ForSFixed64(9), pb::FieldCodec.ForSFixed64(17), 522);
@@ -1131,6 +1244,7 @@ namespace Conformance {
       get { return mapSfixed64Sfixed64_; }
     }
 
+    /// <summary>Field number for the "map_int32_float" field.</summary>
     public const int MapInt32FloatFieldNumber = 66;
     private static readonly pbc::MapField<int, float>.Codec _map_mapInt32Float_codec
         = new pbc::MapField<int, float>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForFloat(21), 530);
@@ -1139,6 +1253,7 @@ namespace Conformance {
       get { return mapInt32Float_; }
     }
 
+    /// <summary>Field number for the "map_int32_double" field.</summary>
     public const int MapInt32DoubleFieldNumber = 67;
     private static readonly pbc::MapField<int, double>.Codec _map_mapInt32Double_codec
         = new pbc::MapField<int, double>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForDouble(17), 538);
@@ -1147,6 +1262,7 @@ namespace Conformance {
       get { return mapInt32Double_; }
     }
 
+    /// <summary>Field number for the "map_bool_bool" field.</summary>
     public const int MapBoolBoolFieldNumber = 68;
     private static readonly pbc::MapField<bool, bool>.Codec _map_mapBoolBool_codec
         = new pbc::MapField<bool, bool>.Codec(pb::FieldCodec.ForBool(8), pb::FieldCodec.ForBool(16), 546);
@@ -1155,6 +1271,7 @@ namespace Conformance {
       get { return mapBoolBool_; }
     }
 
+    /// <summary>Field number for the "map_string_string" field.</summary>
     public const int MapStringStringFieldNumber = 69;
     private static readonly pbc::MapField<string, string>.Codec _map_mapStringString_codec
         = new pbc::MapField<string, string>.Codec(pb::FieldCodec.ForString(10), pb::FieldCodec.ForString(18), 554);
@@ -1163,6 +1280,7 @@ namespace Conformance {
       get { return mapStringString_; }
     }
 
+    /// <summary>Field number for the "map_string_bytes" field.</summary>
     public const int MapStringBytesFieldNumber = 70;
     private static readonly pbc::MapField<string, pb::ByteString>.Codec _map_mapStringBytes_codec
         = new pbc::MapField<string, pb::ByteString>.Codec(pb::FieldCodec.ForString(10), pb::FieldCodec.ForBytes(18), 562);
@@ -1171,6 +1289,7 @@ namespace Conformance {
       get { return mapStringBytes_; }
     }
 
+    /// <summary>Field number for the "map_string_nested_message" field.</summary>
     public const int MapStringNestedMessageFieldNumber = 71;
     private static readonly pbc::MapField<string, global::Conformance.TestAllTypes.Types.NestedMessage>.Codec _map_mapStringNestedMessage_codec
         = new pbc::MapField<string, global::Conformance.TestAllTypes.Types.NestedMessage>.Codec(pb::FieldCodec.ForString(10), pb::FieldCodec.ForMessage(18, global::Conformance.TestAllTypes.Types.NestedMessage.Parser), 570);
@@ -1179,6 +1298,7 @@ namespace Conformance {
       get { return mapStringNestedMessage_; }
     }
 
+    /// <summary>Field number for the "map_string_foreign_message" field.</summary>
     public const int MapStringForeignMessageFieldNumber = 72;
     private static readonly pbc::MapField<string, global::Conformance.ForeignMessage>.Codec _map_mapStringForeignMessage_codec
         = new pbc::MapField<string, global::Conformance.ForeignMessage>.Codec(pb::FieldCodec.ForString(10), pb::FieldCodec.ForMessage(18, global::Conformance.ForeignMessage.Parser), 578);
@@ -1187,6 +1307,7 @@ namespace Conformance {
       get { return mapStringForeignMessage_; }
     }
 
+    /// <summary>Field number for the "map_string_nested_enum" field.</summary>
     public const int MapStringNestedEnumFieldNumber = 73;
     private static readonly pbc::MapField<string, global::Conformance.TestAllTypes.Types.NestedEnum>.Codec _map_mapStringNestedEnum_codec
         = new pbc::MapField<string, global::Conformance.TestAllTypes.Types.NestedEnum>.Codec(pb::FieldCodec.ForString(10), pb::FieldCodec.ForEnum(16, x => (int) x, x => (global::Conformance.TestAllTypes.Types.NestedEnum) x), 586);
@@ -1195,6 +1316,7 @@ namespace Conformance {
       get { return mapStringNestedEnum_; }
     }
 
+    /// <summary>Field number for the "map_string_foreign_enum" field.</summary>
     public const int MapStringForeignEnumFieldNumber = 74;
     private static readonly pbc::MapField<string, global::Conformance.ForeignEnum>.Codec _map_mapStringForeignEnum_codec
         = new pbc::MapField<string, global::Conformance.ForeignEnum>.Codec(pb::FieldCodec.ForString(10), pb::FieldCodec.ForEnum(16, x => (int) x, x => (global::Conformance.ForeignEnum) x), 594);
@@ -1203,6 +1325,7 @@ namespace Conformance {
       get { return mapStringForeignEnum_; }
     }
 
+    /// <summary>Field number for the "oneof_uint32" field.</summary>
     public const int OneofUint32FieldNumber = 111;
     public uint OneofUint32 {
       get { return oneofFieldCase_ == OneofFieldOneofCase.OneofUint32 ? (uint) oneofField_ : 0; }
@@ -1212,6 +1335,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "oneof_nested_message" field.</summary>
     public const int OneofNestedMessageFieldNumber = 112;
     public global::Conformance.TestAllTypes.Types.NestedMessage OneofNestedMessage {
       get { return oneofFieldCase_ == OneofFieldOneofCase.OneofNestedMessage ? (global::Conformance.TestAllTypes.Types.NestedMessage) oneofField_ : null; }
@@ -1221,6 +1345,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "oneof_string" field.</summary>
     public const int OneofStringFieldNumber = 113;
     public string OneofString {
       get { return oneofFieldCase_ == OneofFieldOneofCase.OneofString ? (string) oneofField_ : ""; }
@@ -1230,6 +1355,7 @@ namespace Conformance {
       }
     }
 
+    /// <summary>Field number for the "oneof_bytes" field.</summary>
     public const int OneofBytesFieldNumber = 114;
     public pb::ByteString OneofBytes {
       get { return oneofFieldCase_ == OneofFieldOneofCase.OneofBytes ? (pb::ByteString) oneofField_ : pb::ByteString.Empty; }
@@ -1240,6 +1366,7 @@ namespace Conformance {
     }
 
     private object oneofField_;
+    /// <summary>Enum of possible cases for the "oneof_field" oneof.</summary>
     public enum OneofFieldOneofCase {
       None = 0,
       OneofUint32 = 111,
@@ -2123,12 +2250,16 @@ namespace Conformance {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the TestAllTypes message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
       public enum NestedEnum {
         FOO = 0,
         BAR = 1,
         BAZ = 2,
+        /// <summary>
+        ///  Intentionally negative.
+        /// </summary>
         NEG = -1,
       }
 
@@ -2160,6 +2291,7 @@ namespace Conformance {
           return new NestedMessage(this);
         }
 
+        /// <summary>Field number for the "a" field.</summary>
         public const int AFieldNumber = 1;
         private int a_;
         public int A {
@@ -2169,6 +2301,7 @@ namespace Conformance {
           }
         }
 
+        /// <summary>Field number for the "corecursive" field.</summary>
         public const int CorecursiveFieldNumber = 2;
         private global::Conformance.TestAllTypes corecursive_;
         public global::Conformance.TestAllTypes Corecursive {
@@ -2298,6 +2431,7 @@ namespace Conformance {
       return new ForeignMessage(this);
     }
 
+    /// <summary>Field number for the "c" field.</summary>
     public const int CFieldNumber = 1;
     private int c_;
     public int C {
diff --git a/csharp/src/Google.Protobuf.Test/Google.Protobuf.Test.csproj b/csharp/src/Google.Protobuf.Test/Google.Protobuf.Test.csproj
index d9593828..33be5dae 100644
--- a/csharp/src/Google.Protobuf.Test/Google.Protobuf.Test.csproj
+++ b/csharp/src/Google.Protobuf.Test/Google.Protobuf.Test.csproj
@@ -109,6 +109,7 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="TestCornerCases.cs" />
     <Compile Include="TestProtos\UnittestWellKnownTypes.cs" />
+    <Compile Include="WellKnownTypes\AnyTest.cs" />
     <Compile Include="WellKnownTypes\DurationTest.cs" />
     <Compile Include="WellKnownTypes\TimestampTest.cs" />
     <Compile Include="WellKnownTypes\WrappersTest.cs" />
diff --git a/csharp/src/Google.Protobuf.Test/TestProtos/MapUnittestProto3.cs b/csharp/src/Google.Protobuf.Test/TestProtos/MapUnittestProto3.cs
index e9e18193..e3991bc8 100644
--- a/csharp/src/Google.Protobuf.Test/TestProtos/MapUnittestProto3.cs
+++ b/csharp/src/Google.Protobuf.Test/TestProtos/MapUnittestProto3.cs
@@ -9,10 +9,12 @@ using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
 namespace Google.Protobuf.TestProtos {
 
+  /// <summary>Holder for reflection information generated from google/protobuf/map_unittest_proto3.proto</summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public static partial class MapUnittestProto3 {
 
     #region Descriptor
+    /// <summary>File descriptor for google/protobuf/map_unittest_proto3.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
@@ -21,129 +23,129 @@ namespace Google.Protobuf.TestProtos {
     static MapUnittestProto3() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
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-            "aXR0ZXN0LlRlc3RNYXAuTWFwU2ludDMyU2ludDMyRW50cnkSSgoRbWFwX3Np", 
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-            "ZDMyRml4ZWQzMkVudHJ5EgsKA2tleRgBIAEoBxINCgV2YWx1ZRgCIAEoBzoC", 
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-            "bnQzMkZvcmVpZ25NZXNzYWdlRW50cnkSCwoDa2V5GAEgASgFEjAKBXZhbHVl", 
-            "GAIgASgLMiEucHJvdG9idWZfdW5pdHRlc3QuRm9yZWlnbk1lc3NhZ2U6AjgB", 
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-            "dG9idWZfdW5pdHRlc3QuVGVzdE1hcCK8AQoOVGVzdE1lc3NhZ2VNYXASUQoR", 
-            "bWFwX2ludDMyX21lc3NhZ2UYASADKAsyNi5wcm90b2J1Zl91bml0dGVzdC5U", 
-            "ZXN0TWVzc2FnZU1hcC5NYXBJbnQzMk1lc3NhZ2VFbnRyeRpXChRNYXBJbnQz", 
-            "Mk1lc3NhZ2VFbnRyeRILCgNrZXkYASABKAUSLgoFdmFsdWUYAiABKAsyHy5w", 
-            "cm90b2J1Zl91bml0dGVzdC5UZXN0QWxsVHlwZXM6AjgBIuMBCg9UZXN0U2Ft", 
-            "ZVR5cGVNYXASOgoEbWFwMRgBIAMoCzIsLnByb3RvYnVmX3VuaXR0ZXN0LlRl", 
-            "c3RTYW1lVHlwZU1hcC5NYXAxRW50cnkSOgoEbWFwMhgCIAMoCzIsLnByb3Rv", 
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+            "YWxsZWRUeXBlOgI4ASIUCgRUeXBlEgwKCFRZUEVfRk9PEAAinQEKH01lc3Nh",
+            "Z2VDb250YWluaW5nTWFwQ2FsbGVkRW50cnkSTAoFZW50cnkYASADKAsyPS5w",
+            "cm90b2J1Zl91bml0dGVzdC5NZXNzYWdlQ29udGFpbmluZ01hcENhbGxlZEVu",
+            "dHJ5LkVudHJ5RW50cnkaLAoKRW50cnlFbnRyeRILCgNrZXkYASABKAUSDQoF",
+            "dmFsdWUYAiABKAU6AjgBKj8KB01hcEVudW0SEAoMTUFQX0VOVU1fRk9PEAAS",
+            "EAoMTUFQX0VOVU1fQkFSEAESEAoMTUFQX0VOVU1fQkFaEAJCIPgBAaoCGkdv",
             "b2dsZS5Qcm90b2J1Zi5UZXN0UHJvdG9zYgZwcm90bzM="));
       descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
           new pbr::FileDescriptor[] { global::Google.Protobuf.TestProtos.UnittestProto3.Descriptor, },
@@ -170,6 +172,9 @@ namespace Google.Protobuf.TestProtos {
   #endregion
 
   #region Messages
+  /// <summary>
+  ///  Tests maps.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestMap : pb::IMessage<TestMap> {
     private static readonly pb::MessageParser<TestMap> _parser = new pb::MessageParser<TestMap>(() => new TestMap());
@@ -213,6 +218,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestMap(this);
     }
 
+    /// <summary>Field number for the "map_int32_int32" field.</summary>
     public const int MapInt32Int32FieldNumber = 1;
     private static readonly pbc::MapField<int, int>.Codec _map_mapInt32Int32_codec
         = new pbc::MapField<int, int>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForInt32(16), 10);
@@ -221,6 +227,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapInt32Int32_; }
     }
 
+    /// <summary>Field number for the "map_int64_int64" field.</summary>
     public const int MapInt64Int64FieldNumber = 2;
     private static readonly pbc::MapField<long, long>.Codec _map_mapInt64Int64_codec
         = new pbc::MapField<long, long>.Codec(pb::FieldCodec.ForInt64(8), pb::FieldCodec.ForInt64(16), 18);
@@ -229,6 +236,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapInt64Int64_; }
     }
 
+    /// <summary>Field number for the "map_uint32_uint32" field.</summary>
     public const int MapUint32Uint32FieldNumber = 3;
     private static readonly pbc::MapField<uint, uint>.Codec _map_mapUint32Uint32_codec
         = new pbc::MapField<uint, uint>.Codec(pb::FieldCodec.ForUInt32(8), pb::FieldCodec.ForUInt32(16), 26);
@@ -237,6 +245,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapUint32Uint32_; }
     }
 
+    /// <summary>Field number for the "map_uint64_uint64" field.</summary>
     public const int MapUint64Uint64FieldNumber = 4;
     private static readonly pbc::MapField<ulong, ulong>.Codec _map_mapUint64Uint64_codec
         = new pbc::MapField<ulong, ulong>.Codec(pb::FieldCodec.ForUInt64(8), pb::FieldCodec.ForUInt64(16), 34);
@@ -245,6 +254,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapUint64Uint64_; }
     }
 
+    /// <summary>Field number for the "map_sint32_sint32" field.</summary>
     public const int MapSint32Sint32FieldNumber = 5;
     private static readonly pbc::MapField<int, int>.Codec _map_mapSint32Sint32_codec
         = new pbc::MapField<int, int>.Codec(pb::FieldCodec.ForSInt32(8), pb::FieldCodec.ForSInt32(16), 42);
@@ -253,6 +263,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapSint32Sint32_; }
     }
 
+    /// <summary>Field number for the "map_sint64_sint64" field.</summary>
     public const int MapSint64Sint64FieldNumber = 6;
     private static readonly pbc::MapField<long, long>.Codec _map_mapSint64Sint64_codec
         = new pbc::MapField<long, long>.Codec(pb::FieldCodec.ForSInt64(8), pb::FieldCodec.ForSInt64(16), 50);
@@ -261,6 +272,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapSint64Sint64_; }
     }
 
+    /// <summary>Field number for the "map_fixed32_fixed32" field.</summary>
     public const int MapFixed32Fixed32FieldNumber = 7;
     private static readonly pbc::MapField<uint, uint>.Codec _map_mapFixed32Fixed32_codec
         = new pbc::MapField<uint, uint>.Codec(pb::FieldCodec.ForFixed32(13), pb::FieldCodec.ForFixed32(21), 58);
@@ -269,6 +281,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapFixed32Fixed32_; }
     }
 
+    /// <summary>Field number for the "map_fixed64_fixed64" field.</summary>
     public const int MapFixed64Fixed64FieldNumber = 8;
     private static readonly pbc::MapField<ulong, ulong>.Codec _map_mapFixed64Fixed64_codec
         = new pbc::MapField<ulong, ulong>.Codec(pb::FieldCodec.ForFixed64(9), pb::FieldCodec.ForFixed64(17), 66);
@@ -277,6 +290,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapFixed64Fixed64_; }
     }
 
+    /// <summary>Field number for the "map_sfixed32_sfixed32" field.</summary>
     public const int MapSfixed32Sfixed32FieldNumber = 9;
     private static readonly pbc::MapField<int, int>.Codec _map_mapSfixed32Sfixed32_codec
         = new pbc::MapField<int, int>.Codec(pb::FieldCodec.ForSFixed32(13), pb::FieldCodec.ForSFixed32(21), 74);
@@ -285,6 +299,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapSfixed32Sfixed32_; }
     }
 
+    /// <summary>Field number for the "map_sfixed64_sfixed64" field.</summary>
     public const int MapSfixed64Sfixed64FieldNumber = 10;
     private static readonly pbc::MapField<long, long>.Codec _map_mapSfixed64Sfixed64_codec
         = new pbc::MapField<long, long>.Codec(pb::FieldCodec.ForSFixed64(9), pb::FieldCodec.ForSFixed64(17), 82);
@@ -293,6 +308,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapSfixed64Sfixed64_; }
     }
 
+    /// <summary>Field number for the "map_int32_float" field.</summary>
     public const int MapInt32FloatFieldNumber = 11;
     private static readonly pbc::MapField<int, float>.Codec _map_mapInt32Float_codec
         = new pbc::MapField<int, float>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForFloat(21), 90);
@@ -301,6 +317,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapInt32Float_; }
     }
 
+    /// <summary>Field number for the "map_int32_double" field.</summary>
     public const int MapInt32DoubleFieldNumber = 12;
     private static readonly pbc::MapField<int, double>.Codec _map_mapInt32Double_codec
         = new pbc::MapField<int, double>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForDouble(17), 98);
@@ -309,6 +326,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapInt32Double_; }
     }
 
+    /// <summary>Field number for the "map_bool_bool" field.</summary>
     public const int MapBoolBoolFieldNumber = 13;
     private static readonly pbc::MapField<bool, bool>.Codec _map_mapBoolBool_codec
         = new pbc::MapField<bool, bool>.Codec(pb::FieldCodec.ForBool(8), pb::FieldCodec.ForBool(16), 106);
@@ -317,6 +335,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapBoolBool_; }
     }
 
+    /// <summary>Field number for the "map_string_string" field.</summary>
     public const int MapStringStringFieldNumber = 14;
     private static readonly pbc::MapField<string, string>.Codec _map_mapStringString_codec
         = new pbc::MapField<string, string>.Codec(pb::FieldCodec.ForString(10), pb::FieldCodec.ForString(18), 114);
@@ -325,6 +344,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapStringString_; }
     }
 
+    /// <summary>Field number for the "map_int32_bytes" field.</summary>
     public const int MapInt32BytesFieldNumber = 15;
     private static readonly pbc::MapField<int, pb::ByteString>.Codec _map_mapInt32Bytes_codec
         = new pbc::MapField<int, pb::ByteString>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForBytes(18), 122);
@@ -333,6 +353,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapInt32Bytes_; }
     }
 
+    /// <summary>Field number for the "map_int32_enum" field.</summary>
     public const int MapInt32EnumFieldNumber = 16;
     private static readonly pbc::MapField<int, global::Google.Protobuf.TestProtos.MapEnum>.Codec _map_mapInt32Enum_codec
         = new pbc::MapField<int, global::Google.Protobuf.TestProtos.MapEnum>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForEnum(16, x => (int) x, x => (global::Google.Protobuf.TestProtos.MapEnum) x), 130);
@@ -341,6 +362,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapInt32Enum_; }
     }
 
+    /// <summary>Field number for the "map_int32_foreign_message" field.</summary>
     public const int MapInt32ForeignMessageFieldNumber = 17;
     private static readonly pbc::MapField<int, global::Google.Protobuf.TestProtos.ForeignMessage>.Codec _map_mapInt32ForeignMessage_codec
         = new pbc::MapField<int, global::Google.Protobuf.TestProtos.ForeignMessage>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.TestProtos.ForeignMessage.Parser), 138);
@@ -579,6 +601,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestMapSubmessage(this);
     }
 
+    /// <summary>Field number for the "test_map" field.</summary>
     public const int TestMapFieldNumber = 1;
     private global::Google.Protobuf.TestProtos.TestMap testMap_;
     public global::Google.Protobuf.TestProtos.TestMap TestMap {
@@ -687,6 +710,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestMessageMap(this);
     }
 
+    /// <summary>Field number for the "map_int32_message" field.</summary>
     public const int MapInt32MessageFieldNumber = 1;
     private static readonly pbc::MapField<int, global::Google.Protobuf.TestProtos.TestAllTypes>.Codec _map_mapInt32Message_codec
         = new pbc::MapField<int, global::Google.Protobuf.TestProtos.TestAllTypes>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.TestProtos.TestAllTypes.Parser), 10);
@@ -754,6 +778,9 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Two map fields share the same entry default instance.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestSameTypeMap : pb::IMessage<TestSameTypeMap> {
     private static readonly pb::MessageParser<TestSameTypeMap> _parser = new pb::MessageParser<TestSameTypeMap>(() => new TestSameTypeMap());
@@ -782,6 +809,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestSameTypeMap(this);
     }
 
+    /// <summary>Field number for the "map1" field.</summary>
     public const int Map1FieldNumber = 1;
     private static readonly pbc::MapField<int, int>.Codec _map_map1_codec
         = new pbc::MapField<int, int>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForInt32(16), 10);
@@ -790,6 +818,7 @@ namespace Google.Protobuf.TestProtos {
       get { return map1_; }
     }
 
+    /// <summary>Field number for the "map2" field.</summary>
     public const int Map2FieldNumber = 2;
     private static readonly pbc::MapField<int, int>.Codec _map_map2_codec
         = new pbc::MapField<int, int>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForInt32(16), 18);
@@ -907,6 +936,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestArenaMap(this);
     }
 
+    /// <summary>Field number for the "map_int32_int32" field.</summary>
     public const int MapInt32Int32FieldNumber = 1;
     private static readonly pbc::MapField<int, int>.Codec _map_mapInt32Int32_codec
         = new pbc::MapField<int, int>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForInt32(16), 10);
@@ -915,6 +945,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapInt32Int32_; }
     }
 
+    /// <summary>Field number for the "map_int64_int64" field.</summary>
     public const int MapInt64Int64FieldNumber = 2;
     private static readonly pbc::MapField<long, long>.Codec _map_mapInt64Int64_codec
         = new pbc::MapField<long, long>.Codec(pb::FieldCodec.ForInt64(8), pb::FieldCodec.ForInt64(16), 18);
@@ -923,6 +954,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapInt64Int64_; }
     }
 
+    /// <summary>Field number for the "map_uint32_uint32" field.</summary>
     public const int MapUint32Uint32FieldNumber = 3;
     private static readonly pbc::MapField<uint, uint>.Codec _map_mapUint32Uint32_codec
         = new pbc::MapField<uint, uint>.Codec(pb::FieldCodec.ForUInt32(8), pb::FieldCodec.ForUInt32(16), 26);
@@ -931,6 +963,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapUint32Uint32_; }
     }
 
+    /// <summary>Field number for the "map_uint64_uint64" field.</summary>
     public const int MapUint64Uint64FieldNumber = 4;
     private static readonly pbc::MapField<ulong, ulong>.Codec _map_mapUint64Uint64_codec
         = new pbc::MapField<ulong, ulong>.Codec(pb::FieldCodec.ForUInt64(8), pb::FieldCodec.ForUInt64(16), 34);
@@ -939,6 +972,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapUint64Uint64_; }
     }
 
+    /// <summary>Field number for the "map_sint32_sint32" field.</summary>
     public const int MapSint32Sint32FieldNumber = 5;
     private static readonly pbc::MapField<int, int>.Codec _map_mapSint32Sint32_codec
         = new pbc::MapField<int, int>.Codec(pb::FieldCodec.ForSInt32(8), pb::FieldCodec.ForSInt32(16), 42);
@@ -947,6 +981,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapSint32Sint32_; }
     }
 
+    /// <summary>Field number for the "map_sint64_sint64" field.</summary>
     public const int MapSint64Sint64FieldNumber = 6;
     private static readonly pbc::MapField<long, long>.Codec _map_mapSint64Sint64_codec
         = new pbc::MapField<long, long>.Codec(pb::FieldCodec.ForSInt64(8), pb::FieldCodec.ForSInt64(16), 50);
@@ -955,6 +990,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapSint64Sint64_; }
     }
 
+    /// <summary>Field number for the "map_fixed32_fixed32" field.</summary>
     public const int MapFixed32Fixed32FieldNumber = 7;
     private static readonly pbc::MapField<uint, uint>.Codec _map_mapFixed32Fixed32_codec
         = new pbc::MapField<uint, uint>.Codec(pb::FieldCodec.ForFixed32(13), pb::FieldCodec.ForFixed32(21), 58);
@@ -963,6 +999,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapFixed32Fixed32_; }
     }
 
+    /// <summary>Field number for the "map_fixed64_fixed64" field.</summary>
     public const int MapFixed64Fixed64FieldNumber = 8;
     private static readonly pbc::MapField<ulong, ulong>.Codec _map_mapFixed64Fixed64_codec
         = new pbc::MapField<ulong, ulong>.Codec(pb::FieldCodec.ForFixed64(9), pb::FieldCodec.ForFixed64(17), 66);
@@ -971,6 +1008,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapFixed64Fixed64_; }
     }
 
+    /// <summary>Field number for the "map_sfixed32_sfixed32" field.</summary>
     public const int MapSfixed32Sfixed32FieldNumber = 9;
     private static readonly pbc::MapField<int, int>.Codec _map_mapSfixed32Sfixed32_codec
         = new pbc::MapField<int, int>.Codec(pb::FieldCodec.ForSFixed32(13), pb::FieldCodec.ForSFixed32(21), 74);
@@ -979,6 +1017,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapSfixed32Sfixed32_; }
     }
 
+    /// <summary>Field number for the "map_sfixed64_sfixed64" field.</summary>
     public const int MapSfixed64Sfixed64FieldNumber = 10;
     private static readonly pbc::MapField<long, long>.Codec _map_mapSfixed64Sfixed64_codec
         = new pbc::MapField<long, long>.Codec(pb::FieldCodec.ForSFixed64(9), pb::FieldCodec.ForSFixed64(17), 82);
@@ -987,6 +1026,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapSfixed64Sfixed64_; }
     }
 
+    /// <summary>Field number for the "map_int32_float" field.</summary>
     public const int MapInt32FloatFieldNumber = 11;
     private static readonly pbc::MapField<int, float>.Codec _map_mapInt32Float_codec
         = new pbc::MapField<int, float>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForFloat(21), 90);
@@ -995,6 +1035,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapInt32Float_; }
     }
 
+    /// <summary>Field number for the "map_int32_double" field.</summary>
     public const int MapInt32DoubleFieldNumber = 12;
     private static readonly pbc::MapField<int, double>.Codec _map_mapInt32Double_codec
         = new pbc::MapField<int, double>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForDouble(17), 98);
@@ -1003,6 +1044,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapInt32Double_; }
     }
 
+    /// <summary>Field number for the "map_bool_bool" field.</summary>
     public const int MapBoolBoolFieldNumber = 13;
     private static readonly pbc::MapField<bool, bool>.Codec _map_mapBoolBool_codec
         = new pbc::MapField<bool, bool>.Codec(pb::FieldCodec.ForBool(8), pb::FieldCodec.ForBool(16), 106);
@@ -1011,6 +1053,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapBoolBool_; }
     }
 
+    /// <summary>Field number for the "map_int32_enum" field.</summary>
     public const int MapInt32EnumFieldNumber = 14;
     private static readonly pbc::MapField<int, global::Google.Protobuf.TestProtos.MapEnum>.Codec _map_mapInt32Enum_codec
         = new pbc::MapField<int, global::Google.Protobuf.TestProtos.MapEnum>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForEnum(16, x => (int) x, x => (global::Google.Protobuf.TestProtos.MapEnum) x), 114);
@@ -1019,6 +1062,7 @@ namespace Google.Protobuf.TestProtos {
       get { return mapInt32Enum_; }
     }
 
+    /// <summary>Field number for the "map_int32_foreign_message" field.</summary>
     public const int MapInt32ForeignMessageFieldNumber = 15;
     private static readonly pbc::MapField<int, global::Google.Protobuf.TestProtos.ForeignMessage>.Codec _map_mapInt32ForeignMessage_codec
         = new pbc::MapField<int, global::Google.Protobuf.TestProtos.ForeignMessage>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.TestProtos.ForeignMessage.Parser), 122);
@@ -1212,6 +1256,10 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Previously, message containing enum called Type cannot be used as value of
+  ///  map field.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class MessageContainingEnumCalledType : pb::IMessage<MessageContainingEnumCalledType> {
     private static readonly pb::MessageParser<MessageContainingEnumCalledType> _parser = new pb::MessageParser<MessageContainingEnumCalledType>(() => new MessageContainingEnumCalledType());
@@ -1239,6 +1287,7 @@ namespace Google.Protobuf.TestProtos {
       return new MessageContainingEnumCalledType(this);
     }
 
+    /// <summary>Field number for the "type" field.</summary>
     public const int TypeFieldNumber = 1;
     private static readonly pbc::MapField<int, global::Google.Protobuf.TestProtos.MessageContainingEnumCalledType>.Codec _map_type_codec
         = new pbc::MapField<int, global::Google.Protobuf.TestProtos.MessageContainingEnumCalledType>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.TestProtos.MessageContainingEnumCalledType.Parser), 10);
@@ -1305,6 +1354,7 @@ namespace Google.Protobuf.TestProtos {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the MessageContainingEnumCalledType message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
       public enum Type {
@@ -1316,6 +1366,9 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Previously, message cannot contain map field called "entry".
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class MessageContainingMapCalledEntry : pb::IMessage<MessageContainingMapCalledEntry> {
     private static readonly pb::MessageParser<MessageContainingMapCalledEntry> _parser = new pb::MessageParser<MessageContainingMapCalledEntry>(() => new MessageContainingMapCalledEntry());
@@ -1343,6 +1396,7 @@ namespace Google.Protobuf.TestProtos {
       return new MessageContainingMapCalledEntry(this);
     }
 
+    /// <summary>Field number for the "entry" field.</summary>
     public const int EntryFieldNumber = 1;
     private static readonly pbc::MapField<int, int>.Codec _map_entry_codec
         = new pbc::MapField<int, int>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForInt32(16), 10);
diff --git a/csharp/src/Google.Protobuf.Test/TestProtos/UnittestImportProto3.cs b/csharp/src/Google.Protobuf.Test/TestProtos/UnittestImportProto3.cs
index bf527ac5..a55c66e0 100644
--- a/csharp/src/Google.Protobuf.Test/TestProtos/UnittestImportProto3.cs
+++ b/csharp/src/Google.Protobuf.Test/TestProtos/UnittestImportProto3.cs
@@ -9,10 +9,12 @@ using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
 namespace Google.Protobuf.TestProtos {
 
+  /// <summary>Holder for reflection information generated from google/protobuf/unittest_import_proto3.proto</summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public static partial class UnittestImportProto3 {
 
     #region Descriptor
+    /// <summary>File descriptor for google/protobuf/unittest_import_proto3.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
@@ -21,13 +23,13 @@ namespace Google.Protobuf.TestProtos {
     static UnittestImportProto3() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "Cixnb29nbGUvcHJvdG9idWYvdW5pdHRlc3RfaW1wb3J0X3Byb3RvMy5wcm90", 
-            "bxIYcHJvdG9idWZfdW5pdHRlc3RfaW1wb3J0GjNnb29nbGUvcHJvdG9idWYv", 
-            "dW5pdHRlc3RfaW1wb3J0X3B1YmxpY19wcm90bzMucHJvdG8iGgoNSW1wb3J0", 
-            "TWVzc2FnZRIJCgFkGAEgASgFKlkKCkltcG9ydEVudW0SGwoXSU1QT1JUX0VO", 
-            "VU1fVU5TUEVDSUZJRUQQABIOCgpJTVBPUlRfRk9PEAcSDgoKSU1QT1JUX0JB", 
-            "UhAIEg4KCklNUE9SVF9CQVoQCUI8Chhjb20uZ29vZ2xlLnByb3RvYnVmLnRl", 
-            "c3RIAfgBAaoCGkdvb2dsZS5Qcm90b2J1Zi5UZXN0UHJvdG9zUABiBnByb3Rv", 
+            "Cixnb29nbGUvcHJvdG9idWYvdW5pdHRlc3RfaW1wb3J0X3Byb3RvMy5wcm90",
+            "bxIYcHJvdG9idWZfdW5pdHRlc3RfaW1wb3J0GjNnb29nbGUvcHJvdG9idWYv",
+            "dW5pdHRlc3RfaW1wb3J0X3B1YmxpY19wcm90bzMucHJvdG8iGgoNSW1wb3J0",
+            "TWVzc2FnZRIJCgFkGAEgASgFKlkKCkltcG9ydEVudW0SGwoXSU1QT1JUX0VO",
+            "VU1fVU5TUEVDSUZJRUQQABIOCgpJTVBPUlRfRk9PEAcSDgoKSU1QT1JUX0JB",
+            "UhAIEg4KCklNUE9SVF9CQVoQCUI8Chhjb20uZ29vZ2xlLnByb3RvYnVmLnRl",
+            "c3RIAfgBAaoCGkdvb2dsZS5Qcm90b2J1Zi5UZXN0UHJvdG9zUABiBnByb3Rv",
             "Mw=="));
       descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
           new pbr::FileDescriptor[] { global::Google.Protobuf.TestProtos.UnittestImportPublicProto3.Descriptor, },
@@ -76,6 +78,7 @@ namespace Google.Protobuf.TestProtos {
       return new ImportMessage(this);
     }
 
+    /// <summary>Field number for the "d" field.</summary>
     public const int DFieldNumber = 1;
     private int d_;
     public int D {
diff --git a/csharp/src/Google.Protobuf.Test/TestProtos/UnittestImportPublicProto3.cs b/csharp/src/Google.Protobuf.Test/TestProtos/UnittestImportPublicProto3.cs
index ec460906..81696d70 100644
--- a/csharp/src/Google.Protobuf.Test/TestProtos/UnittestImportPublicProto3.cs
+++ b/csharp/src/Google.Protobuf.Test/TestProtos/UnittestImportPublicProto3.cs
@@ -9,10 +9,12 @@ using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
 namespace Google.Protobuf.TestProtos {
 
+  /// <summary>Holder for reflection information generated from google/protobuf/unittest_import_public_proto3.proto</summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public static partial class UnittestImportPublicProto3 {
 
     #region Descriptor
+    /// <summary>File descriptor for google/protobuf/unittest_import_public_proto3.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
@@ -21,9 +23,9 @@ namespace Google.Protobuf.TestProtos {
     static UnittestImportPublicProto3() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "CjNnb29nbGUvcHJvdG9idWYvdW5pdHRlc3RfaW1wb3J0X3B1YmxpY19wcm90", 
-            "bzMucHJvdG8SGHByb3RvYnVmX3VuaXR0ZXN0X2ltcG9ydCIgChNQdWJsaWNJ", 
-            "bXBvcnRNZXNzYWdlEgkKAWUYASABKAVCNwoYY29tLmdvb2dsZS5wcm90b2J1", 
+            "CjNnb29nbGUvcHJvdG9idWYvdW5pdHRlc3RfaW1wb3J0X3B1YmxpY19wcm90",
+            "bzMucHJvdG8SGHByb3RvYnVmX3VuaXR0ZXN0X2ltcG9ydCIgChNQdWJsaWNJ",
+            "bXBvcnRNZXNzYWdlEgkKAWUYASABKAVCNwoYY29tLmdvb2dsZS5wcm90b2J1",
             "Zi50ZXN0qgIaR29vZ2xlLlByb3RvYnVmLlRlc3RQcm90b3NiBnByb3RvMw=="));
       descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
           new pbr::FileDescriptor[] { },
@@ -62,6 +64,7 @@ namespace Google.Protobuf.TestProtos {
       return new PublicImportMessage(this);
     }
 
+    /// <summary>Field number for the "e" field.</summary>
     public const int EFieldNumber = 1;
     private int e_;
     public int E {
diff --git a/csharp/src/Google.Protobuf.Test/TestProtos/UnittestIssues.cs b/csharp/src/Google.Protobuf.Test/TestProtos/UnittestIssues.cs
index 63119a34..addec057 100644
--- a/csharp/src/Google.Protobuf.Test/TestProtos/UnittestIssues.cs
+++ b/csharp/src/Google.Protobuf.Test/TestProtos/UnittestIssues.cs
@@ -9,10 +9,12 @@ using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
 namespace UnitTest.Issues.TestProtos {
 
+  /// <summary>Holder for reflection information generated from unittest_issues.proto</summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public static partial class UnittestIssues {
 
     #region Descriptor
+    /// <summary>File descriptor for unittest_issues.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
@@ -21,28 +23,28 @@ namespace UnitTest.Issues.TestProtos {
     static UnittestIssues() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "ChV1bml0dGVzdF9pc3N1ZXMucHJvdG8SD3VuaXR0ZXN0X2lzc3VlcyInCghJ", 
-            "c3N1ZTMwNxobCgpOZXN0ZWRPbmNlGg0KC05lc3RlZFR3aWNlIrABChNOZWdh", 
-            "dGl2ZUVudW1NZXNzYWdlEiwKBXZhbHVlGAEgASgOMh0udW5pdHRlc3RfaXNz", 
-            "dWVzLk5lZ2F0aXZlRW51bRIxCgZ2YWx1ZXMYAiADKA4yHS51bml0dGVzdF9p", 
-            "c3N1ZXMuTmVnYXRpdmVFbnVtQgIQABI4Cg1wYWNrZWRfdmFsdWVzGAMgAygO", 
-            "Mh0udW5pdHRlc3RfaXNzdWVzLk5lZ2F0aXZlRW51bUICEAEiEQoPRGVwcmVj", 
-            "YXRlZENoaWxkIrkCChdEZXByZWNhdGVkRmllbGRzTWVzc2FnZRIaCg5Qcmlt", 
-            "aXRpdmVWYWx1ZRgBIAEoBUICGAESGgoOUHJpbWl0aXZlQXJyYXkYAiADKAVC", 
-            "AhgBEjoKDE1lc3NhZ2VWYWx1ZRgDIAEoCzIgLnVuaXR0ZXN0X2lzc3Vlcy5E", 
-            "ZXByZWNhdGVkQ2hpbGRCAhgBEjoKDE1lc3NhZ2VBcnJheRgEIAMoCzIgLnVu", 
-            "aXR0ZXN0X2lzc3Vlcy5EZXByZWNhdGVkQ2hpbGRCAhgBEjYKCUVudW1WYWx1", 
-            "ZRgFIAEoDjIfLnVuaXR0ZXN0X2lzc3Vlcy5EZXByZWNhdGVkRW51bUICGAES", 
-            "NgoJRW51bUFycmF5GAYgAygOMh8udW5pdHRlc3RfaXNzdWVzLkRlcHJlY2F0", 
-            "ZWRFbnVtQgIYASIZCglJdGVtRmllbGQSDAoEaXRlbRgBIAEoBSJECg1SZXNl", 
-            "cnZlZE5hbWVzEg0KBXR5cGVzGAEgASgFEhIKCmRlc2NyaXB0b3IYAiABKAUa", 
-            "EAoOU29tZU5lc3RlZFR5cGUioAEKFVRlc3RKc29uRmllbGRPcmRlcmluZxIT", 
-            "CgtwbGFpbl9pbnQzMhgEIAEoBRITCglvMV9zdHJpbmcYAiABKAlIABISCghv", 
-            "MV9pbnQzMhgFIAEoBUgAEhQKDHBsYWluX3N0cmluZxgBIAEoCRISCghvMl9p", 
-            "bnQzMhgGIAEoBUgBEhMKCW8yX3N0cmluZxgDIAEoCUgBQgQKAm8xQgQKAm8y", 
-            "KlUKDE5lZ2F0aXZlRW51bRIWChJORUdBVElWRV9FTlVNX1pFUk8QABIWCglG", 
-            "aXZlQmVsb3cQ+///////////ARIVCghNaW51c09uZRD///////////8BKi4K", 
-            "DkRlcHJlY2F0ZWRFbnVtEhMKD0RFUFJFQ0FURURfWkVSTxAAEgcKA29uZRAB", 
+            "ChV1bml0dGVzdF9pc3N1ZXMucHJvdG8SD3VuaXR0ZXN0X2lzc3VlcyInCghJ",
+            "c3N1ZTMwNxobCgpOZXN0ZWRPbmNlGg0KC05lc3RlZFR3aWNlIrABChNOZWdh",
+            "dGl2ZUVudW1NZXNzYWdlEiwKBXZhbHVlGAEgASgOMh0udW5pdHRlc3RfaXNz",
+            "dWVzLk5lZ2F0aXZlRW51bRIxCgZ2YWx1ZXMYAiADKA4yHS51bml0dGVzdF9p",
+            "c3N1ZXMuTmVnYXRpdmVFbnVtQgIQABI4Cg1wYWNrZWRfdmFsdWVzGAMgAygO",
+            "Mh0udW5pdHRlc3RfaXNzdWVzLk5lZ2F0aXZlRW51bUICEAEiEQoPRGVwcmVj",
+            "YXRlZENoaWxkIrkCChdEZXByZWNhdGVkRmllbGRzTWVzc2FnZRIaCg5Qcmlt",
+            "aXRpdmVWYWx1ZRgBIAEoBUICGAESGgoOUHJpbWl0aXZlQXJyYXkYAiADKAVC",
+            "AhgBEjoKDE1lc3NhZ2VWYWx1ZRgDIAEoCzIgLnVuaXR0ZXN0X2lzc3Vlcy5E",
+            "ZXByZWNhdGVkQ2hpbGRCAhgBEjoKDE1lc3NhZ2VBcnJheRgEIAMoCzIgLnVu",
+            "aXR0ZXN0X2lzc3Vlcy5EZXByZWNhdGVkQ2hpbGRCAhgBEjYKCUVudW1WYWx1",
+            "ZRgFIAEoDjIfLnVuaXR0ZXN0X2lzc3Vlcy5EZXByZWNhdGVkRW51bUICGAES",
+            "NgoJRW51bUFycmF5GAYgAygOMh8udW5pdHRlc3RfaXNzdWVzLkRlcHJlY2F0",
+            "ZWRFbnVtQgIYASIZCglJdGVtRmllbGQSDAoEaXRlbRgBIAEoBSJECg1SZXNl",
+            "cnZlZE5hbWVzEg0KBXR5cGVzGAEgASgFEhIKCmRlc2NyaXB0b3IYAiABKAUa",
+            "EAoOU29tZU5lc3RlZFR5cGUioAEKFVRlc3RKc29uRmllbGRPcmRlcmluZxIT",
+            "CgtwbGFpbl9pbnQzMhgEIAEoBRITCglvMV9zdHJpbmcYAiABKAlIABISCghv",
+            "MV9pbnQzMhgFIAEoBUgAEhQKDHBsYWluX3N0cmluZxgBIAEoCRISCghvMl9p",
+            "bnQzMhgGIAEoBUgBEhMKCW8yX3N0cmluZxgDIAEoCUgBQgQKAm8xQgQKAm8y",
+            "KlUKDE5lZ2F0aXZlRW51bRIWChJORUdBVElWRV9FTlVNX1pFUk8QABIWCglG",
+            "aXZlQmVsb3cQ+///////////ARIVCghNaW51c09uZRD///////////8BKi4K",
+            "DkRlcHJlY2F0ZWRFbnVtEhMKD0RFUFJFQ0FURURfWkVSTxAAEgcKA29uZRAB",
             "Qh9IAaoCGlVuaXRUZXN0Lklzc3Vlcy5UZXN0UHJvdG9zYgZwcm90bzM="));
       descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
           new pbr::FileDescriptor[] { },
@@ -74,6 +76,10 @@ namespace UnitTest.Issues.TestProtos {
   #endregion
 
   #region Messages
+  /// <summary>
+  ///  Issue 307: when generating doubly-nested types, any references
+  ///  should be of the form A.Types.B.Types.C.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Issue307 : pb::IMessage<Issue307> {
     private static readonly pb::MessageParser<Issue307> _parser = new pb::MessageParser<Issue307>(() => new Issue307());
@@ -149,6 +155,7 @@ namespace UnitTest.Issues.TestProtos {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the Issue307 message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
       [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
@@ -226,6 +233,7 @@ namespace UnitTest.Issues.TestProtos {
         }
 
         #region Nested types
+        /// <summary>Container for nested types declared in the NestedOnce message type.</summary>
         [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
         public static partial class Types {
           [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
@@ -343,6 +351,7 @@ namespace UnitTest.Issues.TestProtos {
       return new NegativeEnumMessage(this);
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 1;
     private global::UnitTest.Issues.TestProtos.NegativeEnum value_ = global::UnitTest.Issues.TestProtos.NegativeEnum.NEGATIVE_ENUM_ZERO;
     public global::UnitTest.Issues.TestProtos.NegativeEnum Value {
@@ -352,6 +361,7 @@ namespace UnitTest.Issues.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "values" field.</summary>
     public const int ValuesFieldNumber = 2;
     private static readonly pb::FieldCodec<global::UnitTest.Issues.TestProtos.NegativeEnum> _repeated_values_codec
         = pb::FieldCodec.ForEnum(16, x => (int) x, x => (global::UnitTest.Issues.TestProtos.NegativeEnum) x);
@@ -360,6 +370,7 @@ namespace UnitTest.Issues.TestProtos {
       get { return values_; }
     }
 
+    /// <summary>Field number for the "packed_values" field.</summary>
     public const int PackedValuesFieldNumber = 3;
     private static readonly pb::FieldCodec<global::UnitTest.Issues.TestProtos.NegativeEnum> _repeated_packedValues_codec
         = pb::FieldCodec.ForEnum(26, x => (int) x, x => (global::UnitTest.Issues.TestProtos.NegativeEnum) x);
@@ -562,6 +573,7 @@ namespace UnitTest.Issues.TestProtos {
       return new DeprecatedFieldsMessage(this);
     }
 
+    /// <summary>Field number for the "PrimitiveValue" field.</summary>
     public const int PrimitiveValueFieldNumber = 1;
     private int primitiveValue_;
     [global::System.ObsoleteAttribute()]
@@ -572,6 +584,7 @@ namespace UnitTest.Issues.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "PrimitiveArray" field.</summary>
     public const int PrimitiveArrayFieldNumber = 2;
     private static readonly pb::FieldCodec<int> _repeated_primitiveArray_codec
         = pb::FieldCodec.ForInt32(18);
@@ -581,6 +594,7 @@ namespace UnitTest.Issues.TestProtos {
       get { return primitiveArray_; }
     }
 
+    /// <summary>Field number for the "MessageValue" field.</summary>
     public const int MessageValueFieldNumber = 3;
     private global::UnitTest.Issues.TestProtos.DeprecatedChild messageValue_;
     [global::System.ObsoleteAttribute()]
@@ -591,6 +605,7 @@ namespace UnitTest.Issues.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "MessageArray" field.</summary>
     public const int MessageArrayFieldNumber = 4;
     private static readonly pb::FieldCodec<global::UnitTest.Issues.TestProtos.DeprecatedChild> _repeated_messageArray_codec
         = pb::FieldCodec.ForMessage(34, global::UnitTest.Issues.TestProtos.DeprecatedChild.Parser);
@@ -600,6 +615,7 @@ namespace UnitTest.Issues.TestProtos {
       get { return messageArray_; }
     }
 
+    /// <summary>Field number for the "EnumValue" field.</summary>
     public const int EnumValueFieldNumber = 5;
     private global::UnitTest.Issues.TestProtos.DeprecatedEnum enumValue_ = global::UnitTest.Issues.TestProtos.DeprecatedEnum.DEPRECATED_ZERO;
     [global::System.ObsoleteAttribute()]
@@ -610,6 +626,7 @@ namespace UnitTest.Issues.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "EnumArray" field.</summary>
     public const int EnumArrayFieldNumber = 6;
     private static readonly pb::FieldCodec<global::UnitTest.Issues.TestProtos.DeprecatedEnum> _repeated_enumArray_codec
         = pb::FieldCodec.ForEnum(50, x => (int) x, x => (global::UnitTest.Issues.TestProtos.DeprecatedEnum) x);
@@ -752,6 +769,9 @@ namespace UnitTest.Issues.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Issue 45: http://code.google.com/p/protobuf-csharp-port/issues/detail?id=45
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class ItemField : pb::IMessage<ItemField> {
     private static readonly pb::MessageParser<ItemField> _parser = new pb::MessageParser<ItemField>(() => new ItemField());
@@ -779,6 +799,7 @@ namespace UnitTest.Issues.TestProtos {
       return new ItemField(this);
     }
 
+    /// <summary>Field number for the "item" field.</summary>
     public const int ItemFieldNumber = 1;
     private int item_;
     public int Item {
@@ -882,6 +903,7 @@ namespace UnitTest.Issues.TestProtos {
       return new ReservedNames(this);
     }
 
+    /// <summary>Field number for the "types" field.</summary>
     public const int Types_FieldNumber = 1;
     private int types_;
     public int Types_ {
@@ -891,6 +913,7 @@ namespace UnitTest.Issues.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "descriptor" field.</summary>
     public const int Descriptor_FieldNumber = 2;
     private int descriptor_;
     public int Descriptor_ {
@@ -981,8 +1004,12 @@ namespace UnitTest.Issues.TestProtos {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the ReservedNames message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
+      /// <summary>
+      ///  Force a nested type called Types
+      /// </summary>
       [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
       public sealed partial class SomeNestedType : pb::IMessage<SomeNestedType> {
         private static readonly pb::MessageParser<SomeNestedType> _parser = new pb::MessageParser<SomeNestedType>(() => new SomeNestedType());
@@ -1064,6 +1091,18 @@ namespace UnitTest.Issues.TestProtos {
 
   }
 
+  /// <summary>
+  ///  These fields are deliberately not declared in numeric
+  ///  order, and the oneof fields aren't contiguous either.
+  ///  This allows for reasonably robust tests of JSON output
+  ///  ordering.
+  ///  TestFieldOrderings in unittest_proto3.proto is similar,
+  ///  but doesn't include oneofs.
+  ///  TODO: Consider adding oneofs to TestFieldOrderings, although
+  ///  that will require fixing other tests in multiple platforms.
+  ///  Alternatively, consider just adding this to
+  ///  unittest_proto3.proto if multiple platforms want it.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestJsonFieldOrdering : pb::IMessage<TestJsonFieldOrdering> {
     private static readonly pb::MessageParser<TestJsonFieldOrdering> _parser = new pb::MessageParser<TestJsonFieldOrdering>(() => new TestJsonFieldOrdering());
@@ -1110,6 +1149,7 @@ namespace UnitTest.Issues.TestProtos {
       return new TestJsonFieldOrdering(this);
     }
 
+    /// <summary>Field number for the "plain_int32" field.</summary>
     public const int PlainInt32FieldNumber = 4;
     private int plainInt32_;
     public int PlainInt32 {
@@ -1119,6 +1159,7 @@ namespace UnitTest.Issues.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "o1_string" field.</summary>
     public const int O1StringFieldNumber = 2;
     public string O1String {
       get { return o1Case_ == O1OneofCase.O1String ? (string) o1_ : ""; }
@@ -1128,6 +1169,7 @@ namespace UnitTest.Issues.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "o1_int32" field.</summary>
     public const int O1Int32FieldNumber = 5;
     public int O1Int32 {
       get { return o1Case_ == O1OneofCase.O1Int32 ? (int) o1_ : 0; }
@@ -1137,6 +1179,7 @@ namespace UnitTest.Issues.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "plain_string" field.</summary>
     public const int PlainStringFieldNumber = 1;
     private string plainString_ = "";
     public string PlainString {
@@ -1146,6 +1189,7 @@ namespace UnitTest.Issues.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "o2_int32" field.</summary>
     public const int O2Int32FieldNumber = 6;
     public int O2Int32 {
       get { return o2Case_ == O2OneofCase.O2Int32 ? (int) o2_ : 0; }
@@ -1155,6 +1199,7 @@ namespace UnitTest.Issues.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "o2_string" field.</summary>
     public const int O2StringFieldNumber = 3;
     public string O2String {
       get { return o2Case_ == O2OneofCase.O2String ? (string) o2_ : ""; }
@@ -1165,6 +1210,7 @@ namespace UnitTest.Issues.TestProtos {
     }
 
     private object o1_;
+    /// <summary>Enum of possible cases for the "o1" oneof.</summary>
     public enum O1OneofCase {
       None = 0,
       O1String = 2,
@@ -1181,6 +1227,7 @@ namespace UnitTest.Issues.TestProtos {
     }
 
     private object o2_;
+    /// <summary>Enum of possible cases for the "o2" oneof.</summary>
     public enum O2OneofCase {
       None = 0,
       O2Int32 = 6,
diff --git a/csharp/src/Google.Protobuf.Test/TestProtos/UnittestProto3.cs b/csharp/src/Google.Protobuf.Test/TestProtos/UnittestProto3.cs
index bf4590ad..0c7b5279 100644
--- a/csharp/src/Google.Protobuf.Test/TestProtos/UnittestProto3.cs
+++ b/csharp/src/Google.Protobuf.Test/TestProtos/UnittestProto3.cs
@@ -9,10 +9,12 @@ using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
 namespace Google.Protobuf.TestProtos {
 
+  /// <summary>Holder for reflection information generated from google/protobuf/unittest_proto3.proto</summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public static partial class UnittestProto3 {
 
     #region Descriptor
+    /// <summary>File descriptor for google/protobuf/unittest_proto3.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
@@ -21,132 +23,132 @@ namespace Google.Protobuf.TestProtos {
     static UnittestProto3() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "CiVnb29nbGUvcHJvdG9idWYvdW5pdHRlc3RfcHJvdG8zLnByb3RvEhFwcm90", 
-            "b2J1Zl91bml0dGVzdBosZ29vZ2xlL3Byb3RvYnVmL3VuaXR0ZXN0X2ltcG9y", 
-            "dF9wcm90bzMucHJvdG8i8A8KDFRlc3RBbGxUeXBlcxIUCgxzaW5nbGVfaW50", 
-            "MzIYASABKAUSFAoMc2luZ2xlX2ludDY0GAIgASgDEhUKDXNpbmdsZV91aW50", 
-            "MzIYAyABKA0SFQoNc2luZ2xlX3VpbnQ2NBgEIAEoBBIVCg1zaW5nbGVfc2lu", 
-            "dDMyGAUgASgREhUKDXNpbmdsZV9zaW50NjQYBiABKBISFgoOc2luZ2xlX2Zp", 
-            "eGVkMzIYByABKAcSFgoOc2luZ2xlX2ZpeGVkNjQYCCABKAYSFwoPc2luZ2xl", 
-            "X3NmaXhlZDMyGAkgASgPEhcKD3NpbmdsZV9zZml4ZWQ2NBgKIAEoEBIUCgxz", 
-            "aW5nbGVfZmxvYXQYCyABKAISFQoNc2luZ2xlX2RvdWJsZRgMIAEoARITCgtz", 
-            "aW5nbGVfYm9vbBgNIAEoCBIVCg1zaW5nbGVfc3RyaW5nGA4gASgJEhQKDHNp", 
-            "bmdsZV9ieXRlcxgPIAEoDBJMChVzaW5nbGVfbmVzdGVkX21lc3NhZ2UYEiAB", 
-            "KAsyLS5wcm90b2J1Zl91bml0dGVzdC5UZXN0QWxsVHlwZXMuTmVzdGVkTWVz", 
-            "c2FnZRJBChZzaW5nbGVfZm9yZWlnbl9tZXNzYWdlGBMgASgLMiEucHJvdG9i", 
-            "dWZfdW5pdHRlc3QuRm9yZWlnbk1lc3NhZ2USRgoVc2luZ2xlX2ltcG9ydF9t", 
-            "ZXNzYWdlGBQgASgLMicucHJvdG9idWZfdW5pdHRlc3RfaW1wb3J0LkltcG9y", 
-            "dE1lc3NhZ2USRgoSc2luZ2xlX25lc3RlZF9lbnVtGBUgASgOMioucHJvdG9i", 
-            "dWZfdW5pdHRlc3QuVGVzdEFsbFR5cGVzLk5lc3RlZEVudW0SOwoTc2luZ2xl", 
-            "X2ZvcmVpZ25fZW51bRgWIAEoDjIeLnByb3RvYnVmX3VuaXR0ZXN0LkZvcmVp", 
-            "Z25FbnVtEkAKEnNpbmdsZV9pbXBvcnRfZW51bRgXIAEoDjIkLnByb3RvYnVm", 
-            "X3VuaXR0ZXN0X2ltcG9ydC5JbXBvcnRFbnVtElMKHHNpbmdsZV9wdWJsaWNf", 
-            "aW1wb3J0X21lc3NhZ2UYGiABKAsyLS5wcm90b2J1Zl91bml0dGVzdF9pbXBv", 
-            "cnQuUHVibGljSW1wb3J0TWVzc2FnZRIWCg5yZXBlYXRlZF9pbnQzMhgfIAMo", 
-            "BRIWCg5yZXBlYXRlZF9pbnQ2NBggIAMoAxIXCg9yZXBlYXRlZF91aW50MzIY", 
-            "ISADKA0SFwoPcmVwZWF0ZWRfdWludDY0GCIgAygEEhcKD3JlcGVhdGVkX3Np", 
-            "bnQzMhgjIAMoERIXCg9yZXBlYXRlZF9zaW50NjQYJCADKBISGAoQcmVwZWF0", 
-            "ZWRfZml4ZWQzMhglIAMoBxIYChByZXBlYXRlZF9maXhlZDY0GCYgAygGEhkK", 
-            "EXJlcGVhdGVkX3NmaXhlZDMyGCcgAygPEhkKEXJlcGVhdGVkX3NmaXhlZDY0", 
-            "GCggAygQEhYKDnJlcGVhdGVkX2Zsb2F0GCkgAygCEhcKD3JlcGVhdGVkX2Rv", 
-            "dWJsZRgqIAMoARIVCg1yZXBlYXRlZF9ib29sGCsgAygIEhcKD3JlcGVhdGVk", 
-            "X3N0cmluZxgsIAMoCRIWCg5yZXBlYXRlZF9ieXRlcxgtIAMoDBJOChdyZXBl", 
-            "YXRlZF9uZXN0ZWRfbWVzc2FnZRgwIAMoCzItLnByb3RvYnVmX3VuaXR0ZXN0", 
-            "LlRlc3RBbGxUeXBlcy5OZXN0ZWRNZXNzYWdlEkMKGHJlcGVhdGVkX2ZvcmVp", 
-            "Z25fbWVzc2FnZRgxIAMoCzIhLnByb3RvYnVmX3VuaXR0ZXN0LkZvcmVpZ25N", 
-            "ZXNzYWdlEkgKF3JlcGVhdGVkX2ltcG9ydF9tZXNzYWdlGDIgAygLMicucHJv", 
-            "dG9idWZfdW5pdHRlc3RfaW1wb3J0LkltcG9ydE1lc3NhZ2USSAoUcmVwZWF0", 
-            "ZWRfbmVzdGVkX2VudW0YMyADKA4yKi5wcm90b2J1Zl91bml0dGVzdC5UZXN0", 
-            "QWxsVHlwZXMuTmVzdGVkRW51bRI9ChVyZXBlYXRlZF9mb3JlaWduX2VudW0Y", 
-            "NCADKA4yHi5wcm90b2J1Zl91bml0dGVzdC5Gb3JlaWduRW51bRJCChRyZXBl", 
-            "YXRlZF9pbXBvcnRfZW51bRg1IAMoDjIkLnByb3RvYnVmX3VuaXR0ZXN0X2lt", 
-            "cG9ydC5JbXBvcnRFbnVtElUKHnJlcGVhdGVkX3B1YmxpY19pbXBvcnRfbWVz", 
-            "c2FnZRg2IAMoCzItLnByb3RvYnVmX3VuaXR0ZXN0X2ltcG9ydC5QdWJsaWNJ", 
-            "bXBvcnRNZXNzYWdlEhYKDG9uZW9mX3VpbnQzMhhvIAEoDUgAEk0KFG9uZW9m", 
-            "X25lc3RlZF9tZXNzYWdlGHAgASgLMi0ucHJvdG9idWZfdW5pdHRlc3QuVGVz", 
-            "dEFsbFR5cGVzLk5lc3RlZE1lc3NhZ2VIABIWCgxvbmVvZl9zdHJpbmcYcSAB", 
-            "KAlIABIVCgtvbmVvZl9ieXRlcxhyIAEoDEgAGhsKDU5lc3RlZE1lc3NhZ2US", 
-            "CgoCYmIYASABKAUiVgoKTmVzdGVkRW51bRIbChdORVNURURfRU5VTV9VTlNQ", 
-            "RUNJRklFRBAAEgcKA0ZPTxABEgcKA0JBUhACEgcKA0JBWhADEhAKA05FRxD/", 
-            "//////////8BQg0KC29uZW9mX2ZpZWxkIrsBChJOZXN0ZWRUZXN0QWxsVHlw", 
-            "ZXMSNAoFY2hpbGQYASABKAsyJS5wcm90b2J1Zl91bml0dGVzdC5OZXN0ZWRU", 
-            "ZXN0QWxsVHlwZXMSMAoHcGF5bG9hZBgCIAEoCzIfLnByb3RvYnVmX3VuaXR0", 
-            "ZXN0LlRlc3RBbGxUeXBlcxI9Cg5yZXBlYXRlZF9jaGlsZBgDIAMoCzIlLnBy", 
-            "b3RvYnVmX3VuaXR0ZXN0Lk5lc3RlZFRlc3RBbGxUeXBlcyI0ChRUZXN0RGVw", 
-            "cmVjYXRlZEZpZWxkcxIcChBkZXByZWNhdGVkX2ludDMyGAEgASgFQgIYASIb", 
-            "Cg5Gb3JlaWduTWVzc2FnZRIJCgFjGAEgASgFIjAKElRlc3RSZXNlcnZlZEZp", 
-            "ZWxkc0oECAIQA0oECA8QEEoECAkQDFIDYmFyUgNiYXoiWgoRVGVzdEZvcmVp", 
-            "Z25OZXN0ZWQSRQoOZm9yZWlnbl9uZXN0ZWQYASABKAsyLS5wcm90b2J1Zl91", 
-            "bml0dGVzdC5UZXN0QWxsVHlwZXMuTmVzdGVkTWVzc2FnZSI0ChhUZXN0UmVh", 
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+            "EAEiyAMKEVRlc3RVbnBhY2tlZFR5cGVzEhoKDnVucGFja2VkX2ludDMyGFog",
+            "AygFQgIQABIaCg51bnBhY2tlZF9pbnQ2NBhbIAMoA0ICEAASGwoPdW5wYWNr",
+            "ZWRfdWludDMyGFwgAygNQgIQABIbCg91bnBhY2tlZF91aW50NjQYXSADKARC",
+            "AhAAEhsKD3VucGFja2VkX3NpbnQzMhheIAMoEUICEAASGwoPdW5wYWNrZWRf",
+            "c2ludDY0GF8gAygSQgIQABIcChB1bnBhY2tlZF9maXhlZDMyGGAgAygHQgIQ",
+            "ABIcChB1bnBhY2tlZF9maXhlZDY0GGEgAygGQgIQABIdChF1bnBhY2tlZF9z",
+            "Zml4ZWQzMhhiIAMoD0ICEAASHQoRdW5wYWNrZWRfc2ZpeGVkNjQYYyADKBBC",
+            "AhAAEhoKDnVucGFja2VkX2Zsb2F0GGQgAygCQgIQABIbCg91bnBhY2tlZF9k",
+            "b3VibGUYZSADKAFCAhAAEhkKDXVucGFja2VkX2Jvb2wYZiADKAhCAhAAEjkK",
+            "DXVucGFja2VkX2VudW0YZyADKA4yHi5wcm90b2J1Zl91bml0dGVzdC5Gb3Jl",
+            "aWduRW51bUICEAAiwAEKI1Rlc3RSZXBlYXRlZFNjYWxhckRpZmZlcmVudFRh",
+            "Z1NpemVzEhgKEHJlcGVhdGVkX2ZpeGVkMzIYDCADKAcSFgoOcmVwZWF0ZWRf",
+            "aW50MzIYDSADKAUSGQoQcmVwZWF0ZWRfZml4ZWQ2NBj+DyADKAYSFwoOcmVw",
+            "ZWF0ZWRfaW50NjQY/w8gAygDEhgKDnJlcGVhdGVkX2Zsb2F0GP7/DyADKAIS",
+            "GQoPcmVwZWF0ZWRfdWludDY0GP//DyADKAQiKAobVGVzdENvbW1lbnRJbmpl",
+            "Y3Rpb25NZXNzYWdlEgkKAWEYASABKAkiDAoKRm9vUmVxdWVzdCINCgtGb29S",
+            "ZXNwb25zZSISChBGb29DbGllbnRNZXNzYWdlIhIKEEZvb1NlcnZlck1lc3Nh",
+            "Z2UiDAoKQmFyUmVxdWVzdCINCgtCYXJSZXNwb25zZSpZCgtGb3JlaWduRW51",
+            "bRIXChNGT1JFSUdOX1VOU1BFQ0lGSUVEEAASDwoLRk9SRUlHTl9GT08QBBIP",
+            "CgtGT1JFSUdOX0JBUhAFEg8KC0ZPUkVJR05fQkFaEAYqdQoUVGVzdEVudW1X",
+            "aXRoRHVwVmFsdWUSKAokVEVTVF9FTlVNX1dJVEhfRFVQX1ZBTFVFX1VOU1BF",
+            "Q0lGSUVEEAASCAoERk9PMRABEggKBEJBUjEQAhIHCgNCQVoQAxIICgRGT08y",
+            "EAESCAoEQkFSMhACGgIQASqdAQoOVGVzdFNwYXJzZUVudW0SIAocVEVTVF9T",
+            "UEFSU0VfRU5VTV9VTlNQRUNJRklFRBAAEgwKCFNQQVJTRV9BEHsSDgoIU1BB",
+            "UlNFX0IQpucDEg8KCFNQQVJTRV9DELKxgAYSFQoIU1BBUlNFX0QQ8f//////",
+            "////ARIVCghTUEFSU0VfRRC03vz///////8BEgwKCFNQQVJTRV9HEAIymQEK",
+            "C1Rlc3RTZXJ2aWNlEkQKA0ZvbxIdLnByb3RvYnVmX3VuaXR0ZXN0LkZvb1Jl",
+            "cXVlc3QaHi5wcm90b2J1Zl91bml0dGVzdC5Gb29SZXNwb25zZRJECgNCYXIS",
+            "HS5wcm90b2J1Zl91bml0dGVzdC5CYXJSZXF1ZXN0Gh4ucHJvdG9idWZfdW5p",
+            "dHRlc3QuQmFyUmVzcG9uc2VCOkINVW5pdHRlc3RQcm90b0gBgAEBiAEBkAEB",
             "+AEBqgIaR29vZ2xlLlByb3RvYnVmLlRlc3RQcm90b3NiBnByb3RvMw=="));
       descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
           new pbr::FileDescriptor[] { global::Google.Protobuf.TestProtos.UnittestImportProto3.Descriptor, },
@@ -197,6 +199,9 @@ namespace Google.Protobuf.TestProtos {
     FOREIGN_BAZ = 6,
   }
 
+  /// <summary>
+  ///  Test an enum that has multiple values with the same number.
+  /// </summary>
   public enum TestEnumWithDupValue {
     TEST_ENUM_WITH_DUP_VALUE_UNSPECIFIED = 0,
     FOO1 = 1,
@@ -206,6 +211,9 @@ namespace Google.Protobuf.TestProtos {
     BAR2 = 2,
   }
 
+  /// <summary>
+  ///  Test an enum with large, unordered values.
+  /// </summary>
   public enum TestSparseEnum {
     TEST_SPARSE_ENUM_UNSPECIFIED = 0,
     SPARSE_A = 123,
@@ -213,12 +221,20 @@ namespace Google.Protobuf.TestProtos {
     SPARSE_C = 12589234,
     SPARSE_D = -15,
     SPARSE_E = -53452,
+    /// <summary>
+    ///  In proto3, value 0 must be the first one specified
+    ///  SPARSE_F = 0;
+    /// </summary>
     SPARSE_G = 2,
   }
 
   #endregion
 
   #region Messages
+  /// <summary>
+  ///  This proto includes every type of field in both singular and repeated
+  ///  forms.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestAllTypes : pb::IMessage<TestAllTypes> {
     private static readonly pb::MessageParser<TestAllTypes> _parser = new pb::MessageParser<TestAllTypes>(() => new TestAllTypes());
@@ -304,8 +320,12 @@ namespace Google.Protobuf.TestProtos {
       return new TestAllTypes(this);
     }
 
+    /// <summary>Field number for the "single_int32" field.</summary>
     public const int SingleInt32FieldNumber = 1;
     private int singleInt32_;
+    /// <summary>
+    ///  Singular
+    /// </summary>
     public int SingleInt32 {
       get { return singleInt32_; }
       set {
@@ -313,6 +333,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_int64" field.</summary>
     public const int SingleInt64FieldNumber = 2;
     private long singleInt64_;
     public long SingleInt64 {
@@ -322,6 +343,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_uint32" field.</summary>
     public const int SingleUint32FieldNumber = 3;
     private uint singleUint32_;
     public uint SingleUint32 {
@@ -331,6 +353,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_uint64" field.</summary>
     public const int SingleUint64FieldNumber = 4;
     private ulong singleUint64_;
     public ulong SingleUint64 {
@@ -340,6 +363,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_sint32" field.</summary>
     public const int SingleSint32FieldNumber = 5;
     private int singleSint32_;
     public int SingleSint32 {
@@ -349,6 +373,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_sint64" field.</summary>
     public const int SingleSint64FieldNumber = 6;
     private long singleSint64_;
     public long SingleSint64 {
@@ -358,6 +383,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_fixed32" field.</summary>
     public const int SingleFixed32FieldNumber = 7;
     private uint singleFixed32_;
     public uint SingleFixed32 {
@@ -367,6 +393,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_fixed64" field.</summary>
     public const int SingleFixed64FieldNumber = 8;
     private ulong singleFixed64_;
     public ulong SingleFixed64 {
@@ -376,6 +403,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_sfixed32" field.</summary>
     public const int SingleSfixed32FieldNumber = 9;
     private int singleSfixed32_;
     public int SingleSfixed32 {
@@ -385,6 +413,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_sfixed64" field.</summary>
     public const int SingleSfixed64FieldNumber = 10;
     private long singleSfixed64_;
     public long SingleSfixed64 {
@@ -394,6 +423,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_float" field.</summary>
     public const int SingleFloatFieldNumber = 11;
     private float singleFloat_;
     public float SingleFloat {
@@ -403,6 +433,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_double" field.</summary>
     public const int SingleDoubleFieldNumber = 12;
     private double singleDouble_;
     public double SingleDouble {
@@ -412,6 +443,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_bool" field.</summary>
     public const int SingleBoolFieldNumber = 13;
     private bool singleBool_;
     public bool SingleBool {
@@ -421,6 +453,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_string" field.</summary>
     public const int SingleStringFieldNumber = 14;
     private string singleString_ = "";
     public string SingleString {
@@ -430,6 +463,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_bytes" field.</summary>
     public const int SingleBytesFieldNumber = 15;
     private pb::ByteString singleBytes_ = pb::ByteString.Empty;
     public pb::ByteString SingleBytes {
@@ -439,6 +473,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_nested_message" field.</summary>
     public const int SingleNestedMessageFieldNumber = 18;
     private global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedMessage singleNestedMessage_;
     public global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedMessage SingleNestedMessage {
@@ -448,6 +483,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_foreign_message" field.</summary>
     public const int SingleForeignMessageFieldNumber = 19;
     private global::Google.Protobuf.TestProtos.ForeignMessage singleForeignMessage_;
     public global::Google.Protobuf.TestProtos.ForeignMessage SingleForeignMessage {
@@ -457,6 +493,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_import_message" field.</summary>
     public const int SingleImportMessageFieldNumber = 20;
     private global::Google.Protobuf.TestProtos.ImportMessage singleImportMessage_;
     public global::Google.Protobuf.TestProtos.ImportMessage SingleImportMessage {
@@ -466,6 +503,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_nested_enum" field.</summary>
     public const int SingleNestedEnumFieldNumber = 21;
     private global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedEnum singleNestedEnum_ = global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedEnum.NESTED_ENUM_UNSPECIFIED;
     public global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedEnum SingleNestedEnum {
@@ -475,6 +513,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_foreign_enum" field.</summary>
     public const int SingleForeignEnumFieldNumber = 22;
     private global::Google.Protobuf.TestProtos.ForeignEnum singleForeignEnum_ = global::Google.Protobuf.TestProtos.ForeignEnum.FOREIGN_UNSPECIFIED;
     public global::Google.Protobuf.TestProtos.ForeignEnum SingleForeignEnum {
@@ -484,6 +523,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_import_enum" field.</summary>
     public const int SingleImportEnumFieldNumber = 23;
     private global::Google.Protobuf.TestProtos.ImportEnum singleImportEnum_ = global::Google.Protobuf.TestProtos.ImportEnum.IMPORT_ENUM_UNSPECIFIED;
     public global::Google.Protobuf.TestProtos.ImportEnum SingleImportEnum {
@@ -493,8 +533,12 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_public_import_message" field.</summary>
     public const int SinglePublicImportMessageFieldNumber = 26;
     private global::Google.Protobuf.TestProtos.PublicImportMessage singlePublicImportMessage_;
+    /// <summary>
+    ///  Defined in unittest_import_public.proto
+    /// </summary>
     public global::Google.Protobuf.TestProtos.PublicImportMessage SinglePublicImportMessage {
       get { return singlePublicImportMessage_; }
       set {
@@ -502,14 +546,19 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "repeated_int32" field.</summary>
     public const int RepeatedInt32FieldNumber = 31;
     private static readonly pb::FieldCodec<int> _repeated_repeatedInt32_codec
         = pb::FieldCodec.ForInt32(250);
     private readonly pbc::RepeatedField<int> repeatedInt32_ = new pbc::RepeatedField<int>();
+    /// <summary>
+    ///  Repeated
+    /// </summary>
     public pbc::RepeatedField<int> RepeatedInt32 {
       get { return repeatedInt32_; }
     }
 
+    /// <summary>Field number for the "repeated_int64" field.</summary>
     public const int RepeatedInt64FieldNumber = 32;
     private static readonly pb::FieldCodec<long> _repeated_repeatedInt64_codec
         = pb::FieldCodec.ForInt64(258);
@@ -518,6 +567,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedInt64_; }
     }
 
+    /// <summary>Field number for the "repeated_uint32" field.</summary>
     public const int RepeatedUint32FieldNumber = 33;
     private static readonly pb::FieldCodec<uint> _repeated_repeatedUint32_codec
         = pb::FieldCodec.ForUInt32(266);
@@ -526,6 +576,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedUint32_; }
     }
 
+    /// <summary>Field number for the "repeated_uint64" field.</summary>
     public const int RepeatedUint64FieldNumber = 34;
     private static readonly pb::FieldCodec<ulong> _repeated_repeatedUint64_codec
         = pb::FieldCodec.ForUInt64(274);
@@ -534,6 +585,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedUint64_; }
     }
 
+    /// <summary>Field number for the "repeated_sint32" field.</summary>
     public const int RepeatedSint32FieldNumber = 35;
     private static readonly pb::FieldCodec<int> _repeated_repeatedSint32_codec
         = pb::FieldCodec.ForSInt32(282);
@@ -542,6 +594,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedSint32_; }
     }
 
+    /// <summary>Field number for the "repeated_sint64" field.</summary>
     public const int RepeatedSint64FieldNumber = 36;
     private static readonly pb::FieldCodec<long> _repeated_repeatedSint64_codec
         = pb::FieldCodec.ForSInt64(290);
@@ -550,6 +603,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedSint64_; }
     }
 
+    /// <summary>Field number for the "repeated_fixed32" field.</summary>
     public const int RepeatedFixed32FieldNumber = 37;
     private static readonly pb::FieldCodec<uint> _repeated_repeatedFixed32_codec
         = pb::FieldCodec.ForFixed32(298);
@@ -558,6 +612,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedFixed32_; }
     }
 
+    /// <summary>Field number for the "repeated_fixed64" field.</summary>
     public const int RepeatedFixed64FieldNumber = 38;
     private static readonly pb::FieldCodec<ulong> _repeated_repeatedFixed64_codec
         = pb::FieldCodec.ForFixed64(306);
@@ -566,6 +621,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedFixed64_; }
     }
 
+    /// <summary>Field number for the "repeated_sfixed32" field.</summary>
     public const int RepeatedSfixed32FieldNumber = 39;
     private static readonly pb::FieldCodec<int> _repeated_repeatedSfixed32_codec
         = pb::FieldCodec.ForSFixed32(314);
@@ -574,6 +630,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedSfixed32_; }
     }
 
+    /// <summary>Field number for the "repeated_sfixed64" field.</summary>
     public const int RepeatedSfixed64FieldNumber = 40;
     private static readonly pb::FieldCodec<long> _repeated_repeatedSfixed64_codec
         = pb::FieldCodec.ForSFixed64(322);
@@ -582,6 +639,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedSfixed64_; }
     }
 
+    /// <summary>Field number for the "repeated_float" field.</summary>
     public const int RepeatedFloatFieldNumber = 41;
     private static readonly pb::FieldCodec<float> _repeated_repeatedFloat_codec
         = pb::FieldCodec.ForFloat(330);
@@ -590,6 +648,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedFloat_; }
     }
 
+    /// <summary>Field number for the "repeated_double" field.</summary>
     public const int RepeatedDoubleFieldNumber = 42;
     private static readonly pb::FieldCodec<double> _repeated_repeatedDouble_codec
         = pb::FieldCodec.ForDouble(338);
@@ -598,6 +657,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedDouble_; }
     }
 
+    /// <summary>Field number for the "repeated_bool" field.</summary>
     public const int RepeatedBoolFieldNumber = 43;
     private static readonly pb::FieldCodec<bool> _repeated_repeatedBool_codec
         = pb::FieldCodec.ForBool(346);
@@ -606,6 +666,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedBool_; }
     }
 
+    /// <summary>Field number for the "repeated_string" field.</summary>
     public const int RepeatedStringFieldNumber = 44;
     private static readonly pb::FieldCodec<string> _repeated_repeatedString_codec
         = pb::FieldCodec.ForString(354);
@@ -614,6 +675,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedString_; }
     }
 
+    /// <summary>Field number for the "repeated_bytes" field.</summary>
     public const int RepeatedBytesFieldNumber = 45;
     private static readonly pb::FieldCodec<pb::ByteString> _repeated_repeatedBytes_codec
         = pb::FieldCodec.ForBytes(362);
@@ -622,6 +684,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedBytes_; }
     }
 
+    /// <summary>Field number for the "repeated_nested_message" field.</summary>
     public const int RepeatedNestedMessageFieldNumber = 48;
     private static readonly pb::FieldCodec<global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedMessage> _repeated_repeatedNestedMessage_codec
         = pb::FieldCodec.ForMessage(386, global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedMessage.Parser);
@@ -630,6 +693,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedNestedMessage_; }
     }
 
+    /// <summary>Field number for the "repeated_foreign_message" field.</summary>
     public const int RepeatedForeignMessageFieldNumber = 49;
     private static readonly pb::FieldCodec<global::Google.Protobuf.TestProtos.ForeignMessage> _repeated_repeatedForeignMessage_codec
         = pb::FieldCodec.ForMessage(394, global::Google.Protobuf.TestProtos.ForeignMessage.Parser);
@@ -638,6 +702,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedForeignMessage_; }
     }
 
+    /// <summary>Field number for the "repeated_import_message" field.</summary>
     public const int RepeatedImportMessageFieldNumber = 50;
     private static readonly pb::FieldCodec<global::Google.Protobuf.TestProtos.ImportMessage> _repeated_repeatedImportMessage_codec
         = pb::FieldCodec.ForMessage(402, global::Google.Protobuf.TestProtos.ImportMessage.Parser);
@@ -646,6 +711,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedImportMessage_; }
     }
 
+    /// <summary>Field number for the "repeated_nested_enum" field.</summary>
     public const int RepeatedNestedEnumFieldNumber = 51;
     private static readonly pb::FieldCodec<global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedEnum> _repeated_repeatedNestedEnum_codec
         = pb::FieldCodec.ForEnum(410, x => (int) x, x => (global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedEnum) x);
@@ -654,6 +720,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedNestedEnum_; }
     }
 
+    /// <summary>Field number for the "repeated_foreign_enum" field.</summary>
     public const int RepeatedForeignEnumFieldNumber = 52;
     private static readonly pb::FieldCodec<global::Google.Protobuf.TestProtos.ForeignEnum> _repeated_repeatedForeignEnum_codec
         = pb::FieldCodec.ForEnum(418, x => (int) x, x => (global::Google.Protobuf.TestProtos.ForeignEnum) x);
@@ -662,6 +729,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedForeignEnum_; }
     }
 
+    /// <summary>Field number for the "repeated_import_enum" field.</summary>
     public const int RepeatedImportEnumFieldNumber = 53;
     private static readonly pb::FieldCodec<global::Google.Protobuf.TestProtos.ImportEnum> _repeated_repeatedImportEnum_codec
         = pb::FieldCodec.ForEnum(426, x => (int) x, x => (global::Google.Protobuf.TestProtos.ImportEnum) x);
@@ -670,14 +738,19 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedImportEnum_; }
     }
 
+    /// <summary>Field number for the "repeated_public_import_message" field.</summary>
     public const int RepeatedPublicImportMessageFieldNumber = 54;
     private static readonly pb::FieldCodec<global::Google.Protobuf.TestProtos.PublicImportMessage> _repeated_repeatedPublicImportMessage_codec
         = pb::FieldCodec.ForMessage(434, global::Google.Protobuf.TestProtos.PublicImportMessage.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.TestProtos.PublicImportMessage> repeatedPublicImportMessage_ = new pbc::RepeatedField<global::Google.Protobuf.TestProtos.PublicImportMessage>();
+    /// <summary>
+    ///  Defined in unittest_import_public.proto
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.TestProtos.PublicImportMessage> RepeatedPublicImportMessage {
       get { return repeatedPublicImportMessage_; }
     }
 
+    /// <summary>Field number for the "oneof_uint32" field.</summary>
     public const int OneofUint32FieldNumber = 111;
     public uint OneofUint32 {
       get { return oneofFieldCase_ == OneofFieldOneofCase.OneofUint32 ? (uint) oneofField_ : 0; }
@@ -687,6 +760,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "oneof_nested_message" field.</summary>
     public const int OneofNestedMessageFieldNumber = 112;
     public global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedMessage OneofNestedMessage {
       get { return oneofFieldCase_ == OneofFieldOneofCase.OneofNestedMessage ? (global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedMessage) oneofField_ : null; }
@@ -696,6 +770,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "oneof_string" field.</summary>
     public const int OneofStringFieldNumber = 113;
     public string OneofString {
       get { return oneofFieldCase_ == OneofFieldOneofCase.OneofString ? (string) oneofField_ : ""; }
@@ -705,6 +780,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "oneof_bytes" field.</summary>
     public const int OneofBytesFieldNumber = 114;
     public pb::ByteString OneofBytes {
       get { return oneofFieldCase_ == OneofFieldOneofCase.OneofBytes ? (pb::ByteString) oneofField_ : pb::ByteString.Empty; }
@@ -715,6 +791,7 @@ namespace Google.Protobuf.TestProtos {
     }
 
     private object oneofField_;
+    /// <summary>Enum of possible cases for the "oneof_field" oneof.</summary>
     public enum OneofFieldOneofCase {
       None = 0,
       OneofUint32 = 111,
@@ -1443,6 +1520,7 @@ namespace Google.Protobuf.TestProtos {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the TestAllTypes message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
       public enum NestedEnum {
@@ -1450,6 +1528,9 @@ namespace Google.Protobuf.TestProtos {
         FOO = 1,
         BAR = 2,
         BAZ = 3,
+        /// <summary>
+        ///  Intentionally negative.
+        /// </summary>
         NEG = -1,
       }
 
@@ -1480,8 +1561,14 @@ namespace Google.Protobuf.TestProtos {
           return new NestedMessage(this);
         }
 
+        /// <summary>Field number for the "bb" field.</summary>
         public const int BbFieldNumber = 1;
         private int bb_;
+        /// <summary>
+        ///  The field name "b" fails to compile in proto1 because it conflicts with
+        ///  a local variable named "b" in one of the generated methods.  Doh.
+        ///  This file needs to compile in proto1 to test backwards-compatibility.
+        /// </summary>
         public int Bb {
           get { return bb_; }
           set {
@@ -1560,6 +1647,9 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  This proto includes a recusively nested message.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class NestedTestAllTypes : pb::IMessage<NestedTestAllTypes> {
     private static readonly pb::MessageParser<NestedTestAllTypes> _parser = new pb::MessageParser<NestedTestAllTypes>(() => new NestedTestAllTypes());
@@ -1589,6 +1679,7 @@ namespace Google.Protobuf.TestProtos {
       return new NestedTestAllTypes(this);
     }
 
+    /// <summary>Field number for the "child" field.</summary>
     public const int ChildFieldNumber = 1;
     private global::Google.Protobuf.TestProtos.NestedTestAllTypes child_;
     public global::Google.Protobuf.TestProtos.NestedTestAllTypes Child {
@@ -1598,6 +1689,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "payload" field.</summary>
     public const int PayloadFieldNumber = 2;
     private global::Google.Protobuf.TestProtos.TestAllTypes payload_;
     public global::Google.Protobuf.TestProtos.TestAllTypes Payload {
@@ -1607,6 +1699,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "repeated_child" field.</summary>
     public const int RepeatedChildFieldNumber = 3;
     private static readonly pb::FieldCodec<global::Google.Protobuf.TestProtos.NestedTestAllTypes> _repeated_repeatedChild_codec
         = pb::FieldCodec.ForMessage(26, global::Google.Protobuf.TestProtos.NestedTestAllTypes.Parser);
@@ -1745,6 +1838,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestDeprecatedFields(this);
     }
 
+    /// <summary>Field number for the "deprecated_int32" field.</summary>
     public const int DeprecatedInt32FieldNumber = 1;
     private int deprecatedInt32_;
     [global::System.ObsoleteAttribute()]
@@ -1821,6 +1915,10 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Define these after TestAllTypes to make sure the compiler can handle
+  ///  that.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class ForeignMessage : pb::IMessage<ForeignMessage> {
     private static readonly pb::MessageParser<ForeignMessage> _parser = new pb::MessageParser<ForeignMessage>(() => new ForeignMessage());
@@ -1848,6 +1946,7 @@ namespace Google.Protobuf.TestProtos {
       return new ForeignMessage(this);
     }
 
+    /// <summary>Field number for the "c" field.</summary>
     public const int CFieldNumber = 1;
     private int c_;
     public int C {
@@ -1999,6 +2098,9 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Test that we can use NestedMessage from outside TestAllTypes.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestForeignNested : pb::IMessage<TestForeignNested> {
     private static readonly pb::MessageParser<TestForeignNested> _parser = new pb::MessageParser<TestForeignNested>(() => new TestForeignNested());
@@ -2026,6 +2128,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestForeignNested(this);
     }
 
+    /// <summary>Field number for the "foreign_nested" field.</summary>
     public const int ForeignNestedFieldNumber = 1;
     private global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedMessage foreignNested_;
     public global::Google.Protobuf.TestProtos.TestAllTypes.Types.NestedMessage ForeignNested {
@@ -2107,6 +2210,9 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Test that really large tag numbers don't break anything.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestReallyLargeTagNumber : pb::IMessage<TestReallyLargeTagNumber> {
     private static readonly pb::MessageParser<TestReallyLargeTagNumber> _parser = new pb::MessageParser<TestReallyLargeTagNumber>(() => new TestReallyLargeTagNumber());
@@ -2135,8 +2241,13 @@ namespace Google.Protobuf.TestProtos {
       return new TestReallyLargeTagNumber(this);
     }
 
+    /// <summary>Field number for the "a" field.</summary>
     public const int AFieldNumber = 1;
     private int a_;
+    /// <summary>
+    ///  The largest possible tag number is 2^28 - 1, since the wire format uses
+    ///  three bits to communicate wire type.
+    /// </summary>
     public int A {
       get { return a_; }
       set {
@@ -2144,6 +2255,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "bb" field.</summary>
     public const int BbFieldNumber = 268435455;
     private int bb_;
     public int Bb {
@@ -2263,6 +2375,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestRecursiveMessage(this);
     }
 
+    /// <summary>Field number for the "a" field.</summary>
     public const int AFieldNumber = 1;
     private global::Google.Protobuf.TestProtos.TestRecursiveMessage a_;
     public global::Google.Protobuf.TestProtos.TestRecursiveMessage A {
@@ -2272,6 +2385,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "i" field.</summary>
     public const int IFieldNumber = 2;
     private int i_;
     public int I {
@@ -2369,6 +2483,9 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Test that mutual recursion works.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestMutualRecursionA : pb::IMessage<TestMutualRecursionA> {
     private static readonly pb::MessageParser<TestMutualRecursionA> _parser = new pb::MessageParser<TestMutualRecursionA>(() => new TestMutualRecursionA());
@@ -2396,6 +2513,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestMutualRecursionA(this);
     }
 
+    /// <summary>Field number for the "bb" field.</summary>
     public const int BbFieldNumber = 1;
     private global::Google.Protobuf.TestProtos.TestMutualRecursionB bb_;
     public global::Google.Protobuf.TestProtos.TestMutualRecursionB Bb {
@@ -2505,6 +2623,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestMutualRecursionB(this);
     }
 
+    /// <summary>Field number for the "a" field.</summary>
     public const int AFieldNumber = 1;
     private global::Google.Protobuf.TestProtos.TestMutualRecursionA a_;
     public global::Google.Protobuf.TestProtos.TestMutualRecursionA A {
@@ -2514,6 +2633,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "optional_int32" field.</summary>
     public const int OptionalInt32FieldNumber = 2;
     private int optionalInt32_;
     public int OptionalInt32 {
@@ -2611,6 +2731,10 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Test message with CamelCase field names.  This violates Protocol Buffer
+  ///  standard style.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestCamelCaseFieldNames : pb::IMessage<TestCamelCaseFieldNames> {
     private static readonly pb::MessageParser<TestCamelCaseFieldNames> _parser = new pb::MessageParser<TestCamelCaseFieldNames>(() => new TestCamelCaseFieldNames());
@@ -2645,6 +2769,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestCamelCaseFieldNames(this);
     }
 
+    /// <summary>Field number for the "PrimitiveField" field.</summary>
     public const int PrimitiveFieldFieldNumber = 1;
     private int primitiveField_;
     public int PrimitiveField {
@@ -2654,6 +2779,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "StringField" field.</summary>
     public const int StringFieldFieldNumber = 2;
     private string stringField_ = "";
     public string StringField {
@@ -2663,6 +2789,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "EnumField" field.</summary>
     public const int EnumFieldFieldNumber = 3;
     private global::Google.Protobuf.TestProtos.ForeignEnum enumField_ = global::Google.Protobuf.TestProtos.ForeignEnum.FOREIGN_UNSPECIFIED;
     public global::Google.Protobuf.TestProtos.ForeignEnum EnumField {
@@ -2672,6 +2799,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "MessageField" field.</summary>
     public const int MessageFieldFieldNumber = 4;
     private global::Google.Protobuf.TestProtos.ForeignMessage messageField_;
     public global::Google.Protobuf.TestProtos.ForeignMessage MessageField {
@@ -2681,6 +2809,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "RepeatedPrimitiveField" field.</summary>
     public const int RepeatedPrimitiveFieldFieldNumber = 7;
     private static readonly pb::FieldCodec<int> _repeated_repeatedPrimitiveField_codec
         = pb::FieldCodec.ForInt32(58);
@@ -2689,6 +2818,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedPrimitiveField_; }
     }
 
+    /// <summary>Field number for the "RepeatedStringField" field.</summary>
     public const int RepeatedStringFieldFieldNumber = 8;
     private static readonly pb::FieldCodec<string> _repeated_repeatedStringField_codec
         = pb::FieldCodec.ForString(66);
@@ -2697,6 +2827,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedStringField_; }
     }
 
+    /// <summary>Field number for the "RepeatedEnumField" field.</summary>
     public const int RepeatedEnumFieldFieldNumber = 9;
     private static readonly pb::FieldCodec<global::Google.Protobuf.TestProtos.ForeignEnum> _repeated_repeatedEnumField_codec
         = pb::FieldCodec.ForEnum(74, x => (int) x, x => (global::Google.Protobuf.TestProtos.ForeignEnum) x);
@@ -2705,6 +2836,7 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedEnumField_; }
     }
 
+    /// <summary>Field number for the "RepeatedMessageField" field.</summary>
     public const int RepeatedMessageFieldFieldNumber = 10;
     private static readonly pb::FieldCodec<global::Google.Protobuf.TestProtos.ForeignMessage> _repeated_repeatedMessageField_codec
         = pb::FieldCodec.ForMessage(82, global::Google.Protobuf.TestProtos.ForeignMessage.Parser);
@@ -2871,6 +3003,10 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  We list fields out of order, to ensure that we're using field number and not
+  ///  field index to determine serialization order.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestFieldOrderings : pb::IMessage<TestFieldOrderings> {
     private static readonly pb::MessageParser<TestFieldOrderings> _parser = new pb::MessageParser<TestFieldOrderings>(() => new TestFieldOrderings());
@@ -2901,6 +3037,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestFieldOrderings(this);
     }
 
+    /// <summary>Field number for the "my_string" field.</summary>
     public const int MyStringFieldNumber = 11;
     private string myString_ = "";
     public string MyString {
@@ -2910,6 +3047,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "my_int" field.</summary>
     public const int MyIntFieldNumber = 1;
     private long myInt_;
     public long MyInt {
@@ -2919,6 +3057,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "my_float" field.</summary>
     public const int MyFloatFieldNumber = 101;
     private float myFloat_;
     public float MyFloat {
@@ -2928,6 +3067,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "single_nested_message" field.</summary>
     public const int SingleNestedMessageFieldNumber = 200;
     private global::Google.Protobuf.TestProtos.TestFieldOrderings.Types.NestedMessage singleNestedMessage_;
     public global::Google.Protobuf.TestProtos.TestFieldOrderings.Types.NestedMessage SingleNestedMessage {
@@ -3056,6 +3196,7 @@ namespace Google.Protobuf.TestProtos {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the TestFieldOrderings message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
       [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
@@ -3086,6 +3227,7 @@ namespace Google.Protobuf.TestProtos {
           return new NestedMessage(this);
         }
 
+        /// <summary>Field number for the "oo" field.</summary>
         public const int OoFieldNumber = 2;
         private long oo_;
         public long Oo {
@@ -3095,8 +3237,14 @@ namespace Google.Protobuf.TestProtos {
           }
         }
 
+        /// <summary>Field number for the "bb" field.</summary>
         public const int BbFieldNumber = 1;
         private int bb_;
+        /// <summary>
+        ///  The field name "b" fails to compile in proto1 because it conflicts with
+        ///  a local variable named "b" in one of the generated methods.  Doh.
+        ///  This file needs to compile in proto1 to test backwards-compatibility.
+        /// </summary>
         public int Bb {
           get { return bb_; }
           set {
@@ -3218,6 +3366,7 @@ namespace Google.Protobuf.TestProtos {
       return new SparseEnumMessage(this);
     }
 
+    /// <summary>Field number for the "sparse_enum" field.</summary>
     public const int SparseEnumFieldNumber = 1;
     private global::Google.Protobuf.TestProtos.TestSparseEnum sparseEnum_ = global::Google.Protobuf.TestProtos.TestSparseEnum.TEST_SPARSE_ENUM_UNSPECIFIED;
     public global::Google.Protobuf.TestProtos.TestSparseEnum SparseEnum {
@@ -3293,6 +3442,9 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Test String and Bytes: string is for valid UTF-8 strings
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class OneString : pb::IMessage<OneString> {
     private static readonly pb::MessageParser<OneString> _parser = new pb::MessageParser<OneString>(() => new OneString());
@@ -3320,6 +3472,7 @@ namespace Google.Protobuf.TestProtos {
       return new OneString(this);
     }
 
+    /// <summary>Field number for the "data" field.</summary>
     public const int DataFieldNumber = 1;
     private string data_ = "";
     public string Data {
@@ -3422,6 +3575,7 @@ namespace Google.Protobuf.TestProtos {
       return new MoreString(this);
     }
 
+    /// <summary>Field number for the "data" field.</summary>
     public const int DataFieldNumber = 1;
     private static readonly pb::FieldCodec<string> _repeated_data_codec
         = pb::FieldCodec.ForString(10);
@@ -3516,6 +3670,7 @@ namespace Google.Protobuf.TestProtos {
       return new OneBytes(this);
     }
 
+    /// <summary>Field number for the "data" field.</summary>
     public const int DataFieldNumber = 1;
     private pb::ByteString data_ = pb::ByteString.Empty;
     public pb::ByteString Data {
@@ -3618,6 +3773,7 @@ namespace Google.Protobuf.TestProtos {
       return new MoreBytes(this);
     }
 
+    /// <summary>Field number for the "data" field.</summary>
     public const int DataFieldNumber = 1;
     private pb::ByteString data_ = pb::ByteString.Empty;
     public pb::ByteString Data {
@@ -3693,6 +3849,9 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Test int32, uint32, int64, uint64, and bool are all compatible
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Int32Message : pb::IMessage<Int32Message> {
     private static readonly pb::MessageParser<Int32Message> _parser = new pb::MessageParser<Int32Message>(() => new Int32Message());
@@ -3720,6 +3879,7 @@ namespace Google.Protobuf.TestProtos {
       return new Int32Message(this);
     }
 
+    /// <summary>Field number for the "data" field.</summary>
     public const int DataFieldNumber = 1;
     private int data_;
     public int Data {
@@ -3822,6 +3982,7 @@ namespace Google.Protobuf.TestProtos {
       return new Uint32Message(this);
     }
 
+    /// <summary>Field number for the "data" field.</summary>
     public const int DataFieldNumber = 1;
     private uint data_;
     public uint Data {
@@ -3924,6 +4085,7 @@ namespace Google.Protobuf.TestProtos {
       return new Int64Message(this);
     }
 
+    /// <summary>Field number for the "data" field.</summary>
     public const int DataFieldNumber = 1;
     private long data_;
     public long Data {
@@ -4026,6 +4188,7 @@ namespace Google.Protobuf.TestProtos {
       return new Uint64Message(this);
     }
 
+    /// <summary>Field number for the "data" field.</summary>
     public const int DataFieldNumber = 1;
     private ulong data_;
     public ulong Data {
@@ -4128,6 +4291,7 @@ namespace Google.Protobuf.TestProtos {
       return new BoolMessage(this);
     }
 
+    /// <summary>Field number for the "data" field.</summary>
     public const int DataFieldNumber = 1;
     private bool data_;
     public bool Data {
@@ -4203,6 +4367,9 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Test oneofs.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestOneof : pb::IMessage<TestOneof> {
     private static readonly pb::MessageParser<TestOneof> _parser = new pb::MessageParser<TestOneof>(() => new TestOneof());
@@ -4241,6 +4408,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestOneof(this);
     }
 
+    /// <summary>Field number for the "foo_int" field.</summary>
     public const int FooIntFieldNumber = 1;
     public int FooInt {
       get { return fooCase_ == FooOneofCase.FooInt ? (int) foo_ : 0; }
@@ -4250,6 +4418,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "foo_string" field.</summary>
     public const int FooStringFieldNumber = 2;
     public string FooString {
       get { return fooCase_ == FooOneofCase.FooString ? (string) foo_ : ""; }
@@ -4259,6 +4428,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "foo_message" field.</summary>
     public const int FooMessageFieldNumber = 3;
     public global::Google.Protobuf.TestProtos.TestAllTypes FooMessage {
       get { return fooCase_ == FooOneofCase.FooMessage ? (global::Google.Protobuf.TestProtos.TestAllTypes) foo_ : null; }
@@ -4269,6 +4439,7 @@ namespace Google.Protobuf.TestProtos {
     }
 
     private object foo_;
+    /// <summary>Enum of possible cases for the "foo" oneof.</summary>
     public enum FooOneofCase {
       None = 0,
       FooInt = 1,
@@ -4431,6 +4602,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestPackedTypes(this);
     }
 
+    /// <summary>Field number for the "packed_int32" field.</summary>
     public const int PackedInt32FieldNumber = 90;
     private static readonly pb::FieldCodec<int> _repeated_packedInt32_codec
         = pb::FieldCodec.ForInt32(722);
@@ -4439,6 +4611,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedInt32_; }
     }
 
+    /// <summary>Field number for the "packed_int64" field.</summary>
     public const int PackedInt64FieldNumber = 91;
     private static readonly pb::FieldCodec<long> _repeated_packedInt64_codec
         = pb::FieldCodec.ForInt64(730);
@@ -4447,6 +4620,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedInt64_; }
     }
 
+    /// <summary>Field number for the "packed_uint32" field.</summary>
     public const int PackedUint32FieldNumber = 92;
     private static readonly pb::FieldCodec<uint> _repeated_packedUint32_codec
         = pb::FieldCodec.ForUInt32(738);
@@ -4455,6 +4629,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedUint32_; }
     }
 
+    /// <summary>Field number for the "packed_uint64" field.</summary>
     public const int PackedUint64FieldNumber = 93;
     private static readonly pb::FieldCodec<ulong> _repeated_packedUint64_codec
         = pb::FieldCodec.ForUInt64(746);
@@ -4463,6 +4638,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedUint64_; }
     }
 
+    /// <summary>Field number for the "packed_sint32" field.</summary>
     public const int PackedSint32FieldNumber = 94;
     private static readonly pb::FieldCodec<int> _repeated_packedSint32_codec
         = pb::FieldCodec.ForSInt32(754);
@@ -4471,6 +4647,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedSint32_; }
     }
 
+    /// <summary>Field number for the "packed_sint64" field.</summary>
     public const int PackedSint64FieldNumber = 95;
     private static readonly pb::FieldCodec<long> _repeated_packedSint64_codec
         = pb::FieldCodec.ForSInt64(762);
@@ -4479,6 +4656,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedSint64_; }
     }
 
+    /// <summary>Field number for the "packed_fixed32" field.</summary>
     public const int PackedFixed32FieldNumber = 96;
     private static readonly pb::FieldCodec<uint> _repeated_packedFixed32_codec
         = pb::FieldCodec.ForFixed32(770);
@@ -4487,6 +4665,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedFixed32_; }
     }
 
+    /// <summary>Field number for the "packed_fixed64" field.</summary>
     public const int PackedFixed64FieldNumber = 97;
     private static readonly pb::FieldCodec<ulong> _repeated_packedFixed64_codec
         = pb::FieldCodec.ForFixed64(778);
@@ -4495,6 +4674,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedFixed64_; }
     }
 
+    /// <summary>Field number for the "packed_sfixed32" field.</summary>
     public const int PackedSfixed32FieldNumber = 98;
     private static readonly pb::FieldCodec<int> _repeated_packedSfixed32_codec
         = pb::FieldCodec.ForSFixed32(786);
@@ -4503,6 +4683,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedSfixed32_; }
     }
 
+    /// <summary>Field number for the "packed_sfixed64" field.</summary>
     public const int PackedSfixed64FieldNumber = 99;
     private static readonly pb::FieldCodec<long> _repeated_packedSfixed64_codec
         = pb::FieldCodec.ForSFixed64(794);
@@ -4511,6 +4692,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedSfixed64_; }
     }
 
+    /// <summary>Field number for the "packed_float" field.</summary>
     public const int PackedFloatFieldNumber = 100;
     private static readonly pb::FieldCodec<float> _repeated_packedFloat_codec
         = pb::FieldCodec.ForFloat(802);
@@ -4519,6 +4701,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedFloat_; }
     }
 
+    /// <summary>Field number for the "packed_double" field.</summary>
     public const int PackedDoubleFieldNumber = 101;
     private static readonly pb::FieldCodec<double> _repeated_packedDouble_codec
         = pb::FieldCodec.ForDouble(810);
@@ -4527,6 +4710,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedDouble_; }
     }
 
+    /// <summary>Field number for the "packed_bool" field.</summary>
     public const int PackedBoolFieldNumber = 102;
     private static readonly pb::FieldCodec<bool> _repeated_packedBool_codec
         = pb::FieldCodec.ForBool(818);
@@ -4535,6 +4719,7 @@ namespace Google.Protobuf.TestProtos {
       get { return packedBool_; }
     }
 
+    /// <summary>Field number for the "packed_enum" field.</summary>
     public const int PackedEnumFieldNumber = 103;
     private static readonly pb::FieldCodec<global::Google.Protobuf.TestProtos.ForeignEnum> _repeated_packedEnum_codec
         = pb::FieldCodec.ForEnum(826, x => (int) x, x => (global::Google.Protobuf.TestProtos.ForeignEnum) x);
@@ -4733,6 +4918,10 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  A message with the same fields as TestPackedTypes, but without packing. Used
+  ///  to test packed &lt;-> unpacked wire compatibility.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestUnpackedTypes : pb::IMessage<TestUnpackedTypes> {
     private static readonly pb::MessageParser<TestUnpackedTypes> _parser = new pb::MessageParser<TestUnpackedTypes>(() => new TestUnpackedTypes());
@@ -4773,6 +4962,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestUnpackedTypes(this);
     }
 
+    /// <summary>Field number for the "unpacked_int32" field.</summary>
     public const int UnpackedInt32FieldNumber = 90;
     private static readonly pb::FieldCodec<int> _repeated_unpackedInt32_codec
         = pb::FieldCodec.ForInt32(720);
@@ -4781,6 +4971,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedInt32_; }
     }
 
+    /// <summary>Field number for the "unpacked_int64" field.</summary>
     public const int UnpackedInt64FieldNumber = 91;
     private static readonly pb::FieldCodec<long> _repeated_unpackedInt64_codec
         = pb::FieldCodec.ForInt64(728);
@@ -4789,6 +4980,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedInt64_; }
     }
 
+    /// <summary>Field number for the "unpacked_uint32" field.</summary>
     public const int UnpackedUint32FieldNumber = 92;
     private static readonly pb::FieldCodec<uint> _repeated_unpackedUint32_codec
         = pb::FieldCodec.ForUInt32(736);
@@ -4797,6 +4989,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedUint32_; }
     }
 
+    /// <summary>Field number for the "unpacked_uint64" field.</summary>
     public const int UnpackedUint64FieldNumber = 93;
     private static readonly pb::FieldCodec<ulong> _repeated_unpackedUint64_codec
         = pb::FieldCodec.ForUInt64(744);
@@ -4805,6 +4998,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedUint64_; }
     }
 
+    /// <summary>Field number for the "unpacked_sint32" field.</summary>
     public const int UnpackedSint32FieldNumber = 94;
     private static readonly pb::FieldCodec<int> _repeated_unpackedSint32_codec
         = pb::FieldCodec.ForSInt32(752);
@@ -4813,6 +5007,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedSint32_; }
     }
 
+    /// <summary>Field number for the "unpacked_sint64" field.</summary>
     public const int UnpackedSint64FieldNumber = 95;
     private static readonly pb::FieldCodec<long> _repeated_unpackedSint64_codec
         = pb::FieldCodec.ForSInt64(760);
@@ -4821,6 +5016,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedSint64_; }
     }
 
+    /// <summary>Field number for the "unpacked_fixed32" field.</summary>
     public const int UnpackedFixed32FieldNumber = 96;
     private static readonly pb::FieldCodec<uint> _repeated_unpackedFixed32_codec
         = pb::FieldCodec.ForFixed32(773);
@@ -4829,6 +5025,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedFixed32_; }
     }
 
+    /// <summary>Field number for the "unpacked_fixed64" field.</summary>
     public const int UnpackedFixed64FieldNumber = 97;
     private static readonly pb::FieldCodec<ulong> _repeated_unpackedFixed64_codec
         = pb::FieldCodec.ForFixed64(777);
@@ -4837,6 +5034,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedFixed64_; }
     }
 
+    /// <summary>Field number for the "unpacked_sfixed32" field.</summary>
     public const int UnpackedSfixed32FieldNumber = 98;
     private static readonly pb::FieldCodec<int> _repeated_unpackedSfixed32_codec
         = pb::FieldCodec.ForSFixed32(789);
@@ -4845,6 +5043,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedSfixed32_; }
     }
 
+    /// <summary>Field number for the "unpacked_sfixed64" field.</summary>
     public const int UnpackedSfixed64FieldNumber = 99;
     private static readonly pb::FieldCodec<long> _repeated_unpackedSfixed64_codec
         = pb::FieldCodec.ForSFixed64(793);
@@ -4853,6 +5052,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedSfixed64_; }
     }
 
+    /// <summary>Field number for the "unpacked_float" field.</summary>
     public const int UnpackedFloatFieldNumber = 100;
     private static readonly pb::FieldCodec<float> _repeated_unpackedFloat_codec
         = pb::FieldCodec.ForFloat(805);
@@ -4861,6 +5061,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedFloat_; }
     }
 
+    /// <summary>Field number for the "unpacked_double" field.</summary>
     public const int UnpackedDoubleFieldNumber = 101;
     private static readonly pb::FieldCodec<double> _repeated_unpackedDouble_codec
         = pb::FieldCodec.ForDouble(809);
@@ -4869,6 +5070,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedDouble_; }
     }
 
+    /// <summary>Field number for the "unpacked_bool" field.</summary>
     public const int UnpackedBoolFieldNumber = 102;
     private static readonly pb::FieldCodec<bool> _repeated_unpackedBool_codec
         = pb::FieldCodec.ForBool(816);
@@ -4877,6 +5079,7 @@ namespace Google.Protobuf.TestProtos {
       get { return unpackedBool_; }
     }
 
+    /// <summary>Field number for the "unpacked_enum" field.</summary>
     public const int UnpackedEnumFieldNumber = 103;
     private static readonly pb::FieldCodec<global::Google.Protobuf.TestProtos.ForeignEnum> _repeated_unpackedEnum_codec
         = pb::FieldCodec.ForEnum(824, x => (int) x, x => (global::Google.Protobuf.TestProtos.ForeignEnum) x);
@@ -5107,30 +5310,45 @@ namespace Google.Protobuf.TestProtos {
       return new TestRepeatedScalarDifferentTagSizes(this);
     }
 
+    /// <summary>Field number for the "repeated_fixed32" field.</summary>
     public const int RepeatedFixed32FieldNumber = 12;
     private static readonly pb::FieldCodec<uint> _repeated_repeatedFixed32_codec
         = pb::FieldCodec.ForFixed32(98);
     private readonly pbc::RepeatedField<uint> repeatedFixed32_ = new pbc::RepeatedField<uint>();
+    /// <summary>
+    ///  Parsing repeated fixed size values used to fail. This message needs to be
+    ///  used in order to get a tag of the right size; all of the repeated fields
+    ///  in TestAllTypes didn't trigger the check.
+    /// </summary>
     public pbc::RepeatedField<uint> RepeatedFixed32 {
       get { return repeatedFixed32_; }
     }
 
+    /// <summary>Field number for the "repeated_int32" field.</summary>
     public const int RepeatedInt32FieldNumber = 13;
     private static readonly pb::FieldCodec<int> _repeated_repeatedInt32_codec
         = pb::FieldCodec.ForInt32(106);
     private readonly pbc::RepeatedField<int> repeatedInt32_ = new pbc::RepeatedField<int>();
+    /// <summary>
+    ///  Check for a varint type, just for good measure.
+    /// </summary>
     public pbc::RepeatedField<int> RepeatedInt32 {
       get { return repeatedInt32_; }
     }
 
+    /// <summary>Field number for the "repeated_fixed64" field.</summary>
     public const int RepeatedFixed64FieldNumber = 2046;
     private static readonly pb::FieldCodec<ulong> _repeated_repeatedFixed64_codec
         = pb::FieldCodec.ForFixed64(16370);
     private readonly pbc::RepeatedField<ulong> repeatedFixed64_ = new pbc::RepeatedField<ulong>();
+    /// <summary>
+    ///  These have two-byte tags.
+    /// </summary>
     public pbc::RepeatedField<ulong> RepeatedFixed64 {
       get { return repeatedFixed64_; }
     }
 
+    /// <summary>Field number for the "repeated_int64" field.</summary>
     public const int RepeatedInt64FieldNumber = 2047;
     private static readonly pb::FieldCodec<long> _repeated_repeatedInt64_codec
         = pb::FieldCodec.ForInt64(16378);
@@ -5139,14 +5357,19 @@ namespace Google.Protobuf.TestProtos {
       get { return repeatedInt64_; }
     }
 
+    /// <summary>Field number for the "repeated_float" field.</summary>
     public const int RepeatedFloatFieldNumber = 262142;
     private static readonly pb::FieldCodec<float> _repeated_repeatedFloat_codec
         = pb::FieldCodec.ForFloat(2097138);
     private readonly pbc::RepeatedField<float> repeatedFloat_ = new pbc::RepeatedField<float>();
+    /// <summary>
+    ///  Three byte tags.
+    /// </summary>
     public pbc::RepeatedField<float> RepeatedFloat {
       get { return repeatedFloat_; }
     }
 
+    /// <summary>Field number for the "repeated_uint64" field.</summary>
     public const int RepeatedUint64FieldNumber = 262143;
     private static readonly pb::FieldCodec<ulong> _repeated_repeatedUint64_codec
         = pb::FieldCodec.ForUInt64(2097146);
@@ -5292,8 +5515,12 @@ namespace Google.Protobuf.TestProtos {
       return new TestCommentInjectionMessage(this);
     }
 
+    /// <summary>Field number for the "a" field.</summary>
     public const int AFieldNumber = 1;
     private string a_ = "";
+    /// <summary>
+    ///  */ &lt;- This should not close the generated doc comment
+    /// </summary>
     public string A {
       get { return a_; }
       set {
@@ -5367,6 +5594,9 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  Test that RPC services work.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class FooRequest : pb::IMessage<FooRequest> {
     private static readonly pb::MessageParser<FooRequest> _parser = new pb::MessageParser<FooRequest>(() => new FooRequest());
diff --git a/csharp/src/Google.Protobuf.Test/TestProtos/UnittestWellKnownTypes.cs b/csharp/src/Google.Protobuf.Test/TestProtos/UnittestWellKnownTypes.cs
index 16634e03..bd90ddd8 100644
--- a/csharp/src/Google.Protobuf.Test/TestProtos/UnittestWellKnownTypes.cs
+++ b/csharp/src/Google.Protobuf.Test/TestProtos/UnittestWellKnownTypes.cs
@@ -9,10 +9,12 @@ using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
 namespace Google.Protobuf.TestProtos {
 
+  /// <summary>Holder for reflection information generated from google/protobuf/unittest_well_known_types.proto</summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public static partial class UnittestWellKnownTypes {
 
     #region Descriptor
+    /// <summary>File descriptor for google/protobuf/unittest_well_known_types.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
@@ -21,141 +23,141 @@ namespace Google.Protobuf.TestProtos {
     static UnittestWellKnownTypes() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "Ci9nb29nbGUvcHJvdG9idWYvdW5pdHRlc3Rfd2VsbF9rbm93bl90eXBlcy5w", 
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-            "c3RhbXASKQoKdHlwZV9maWVsZBgJIAMoCzIVLmdvb2dsZS5wcm90b2J1Zi5U", 
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-            "Z29vZ2xlLnByb3RvYnVmLlVJbnQ2NFZhbHVlEjAKC2ludDMyX2ZpZWxkGA4g", 
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-            "bGQYCCABKAsyGi5nb29nbGUucHJvdG9idWYuVGltZXN0YW1wSAASKwoKdHlw", 
-            "ZV9maWVsZBgJIAEoCzIVLmdvb2dsZS5wcm90b2J1Zi5UeXBlSAASNAoMZG91", 
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-            "bEtub3duVHlwZXMuRG91YmxlRmllbGRFbnRyeRJJCgtmbG9hdF9maWVsZBgL", 
-            "IAMoCzI0LnByb3RvYnVmX3VuaXR0ZXN0Lk1hcFdlbGxLbm93blR5cGVzLkZs", 
-            "b2F0RmllbGRFbnRyeRJJCgtpbnQ2NF9maWVsZBgMIAMoCzI0LnByb3RvYnVm", 
-            "X3VuaXR0ZXN0Lk1hcFdlbGxLbm93blR5cGVzLkludDY0RmllbGRFbnRyeRJL", 
-            "Cgx1aW50NjRfZmllbGQYDSADKAsyNS5wcm90b2J1Zl91bml0dGVzdC5NYXBX", 
-            "ZWxsS25vd25UeXBlcy5VaW50NjRGaWVsZEVudHJ5EkkKC2ludDMyX2ZpZWxk", 
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-            "SW50MzJGaWVsZEVudHJ5EksKDHVpbnQzMl9maWVsZBgPIAMoCzI1LnByb3Rv", 
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+            "SW50MzJGaWVsZEVudHJ5EgsKA2tleRgBIAEoBRIqCgV2YWx1ZRgCIAEoCzIb",
+            "Lmdvb2dsZS5wcm90b2J1Zi5JbnQzMlZhbHVlOgI4ARpQChBVaW50MzJGaWVs",
+            "ZEVudHJ5EgsKA2tleRgBIAEoBRIrCgV2YWx1ZRgCIAEoCzIcLmdvb2dsZS5w",
+            "cm90b2J1Zi5VSW50MzJWYWx1ZToCOAEaTAoOQm9vbEZpZWxkRW50cnkSCwoD",
+            "a2V5GAEgASgFEikKBXZhbHVlGAIgASgLMhouZ29vZ2xlLnByb3RvYnVmLkJv",
+            "b2xWYWx1ZToCOAEaUAoQU3RyaW5nRmllbGRFbnRyeRILCgNrZXkYASABKAUS",
+            "KwoFdmFsdWUYAiABKAsyHC5nb29nbGUucHJvdG9idWYuU3RyaW5nVmFsdWU6",
+            "AjgBGk4KD0J5dGVzRmllbGRFbnRyeRILCgNrZXkYASABKAUSKgoFdmFsdWUY",
+            "AiABKAsyGy5nb29nbGUucHJvdG9idWYuQnl0ZXNWYWx1ZToCOAFCOQoYY29t",
+            "Lmdvb2dsZS5wcm90b2J1Zi50ZXN0UAGqAhpHb29nbGUuUHJvdG9idWYuVGVz",
             "dFByb3Rvc2IGcHJvdG8z"));
       descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
           new pbr::FileDescriptor[] { global::Google.Protobuf.WellKnownTypes.Proto.Any.Descriptor, global::Google.Protobuf.WellKnownTypes.Proto.Api.Descriptor, global::Google.Protobuf.WellKnownTypes.Proto.Duration.Descriptor, global::Google.Protobuf.WellKnownTypes.Proto.Empty.Descriptor, global::Google.Protobuf.WellKnownTypes.Proto.FieldMask.Descriptor, global::Google.Protobuf.WellKnownTypes.Proto.SourceContext.Descriptor, global::Google.Protobuf.WellKnownTypes.Proto.Struct.Descriptor, global::Google.Protobuf.WellKnownTypes.Proto.Timestamp.Descriptor, global::Google.Protobuf.WellKnownTypes.Proto.Type.Descriptor, global::Google.Protobuf.WellKnownTypes.Wrappers.Descriptor, },
@@ -170,6 +172,11 @@ namespace Google.Protobuf.TestProtos {
 
   }
   #region Messages
+  /// <summary>
+  ///  Test that we can include all well-known types.
+  ///  Each wrapper type is included separately, as languages
+  ///  map handle different wrappers in different ways.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class TestWellKnownTypes : pb::IMessage<TestWellKnownTypes> {
     private static readonly pb::MessageParser<TestWellKnownTypes> _parser = new pb::MessageParser<TestWellKnownTypes>(() => new TestWellKnownTypes());
@@ -214,6 +221,7 @@ namespace Google.Protobuf.TestProtos {
       return new TestWellKnownTypes(this);
     }
 
+    /// <summary>Field number for the "any_field" field.</summary>
     public const int AnyFieldFieldNumber = 1;
     private global::Google.Protobuf.WellKnownTypes.Any anyField_;
     public global::Google.Protobuf.WellKnownTypes.Any AnyField {
@@ -223,6 +231,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "api_field" field.</summary>
     public const int ApiFieldFieldNumber = 2;
     private global::Google.Protobuf.WellKnownTypes.Api apiField_;
     public global::Google.Protobuf.WellKnownTypes.Api ApiField {
@@ -232,6 +241,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "duration_field" field.</summary>
     public const int DurationFieldFieldNumber = 3;
     private global::Google.Protobuf.WellKnownTypes.Duration durationField_;
     public global::Google.Protobuf.WellKnownTypes.Duration DurationField {
@@ -241,6 +251,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "empty_field" field.</summary>
     public const int EmptyFieldFieldNumber = 4;
     private global::Google.Protobuf.WellKnownTypes.Empty emptyField_;
     public global::Google.Protobuf.WellKnownTypes.Empty EmptyField {
@@ -250,6 +261,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "field_mask_field" field.</summary>
     public const int FieldMaskFieldFieldNumber = 5;
     private global::Google.Protobuf.WellKnownTypes.FieldMask fieldMaskField_;
     public global::Google.Protobuf.WellKnownTypes.FieldMask FieldMaskField {
@@ -259,6 +271,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "source_context_field" field.</summary>
     public const int SourceContextFieldFieldNumber = 6;
     private global::Google.Protobuf.WellKnownTypes.SourceContext sourceContextField_;
     public global::Google.Protobuf.WellKnownTypes.SourceContext SourceContextField {
@@ -268,6 +281,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "struct_field" field.</summary>
     public const int StructFieldFieldNumber = 7;
     private global::Google.Protobuf.WellKnownTypes.Struct structField_;
     public global::Google.Protobuf.WellKnownTypes.Struct StructField {
@@ -277,6 +291,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "timestamp_field" field.</summary>
     public const int TimestampFieldFieldNumber = 8;
     private global::Google.Protobuf.WellKnownTypes.Timestamp timestampField_;
     public global::Google.Protobuf.WellKnownTypes.Timestamp TimestampField {
@@ -286,6 +301,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "type_field" field.</summary>
     public const int TypeFieldFieldNumber = 9;
     private global::Google.Protobuf.WellKnownTypes.Type typeField_;
     public global::Google.Protobuf.WellKnownTypes.Type TypeField {
@@ -295,6 +311,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "double_field" field.</summary>
     public const int DoubleFieldFieldNumber = 10;
     private static readonly pb::FieldCodec<double?> _single_doubleField_codec = pb::FieldCodec.ForStructWrapper<double>(82);
     private double? doubleField_;
@@ -305,6 +322,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "float_field" field.</summary>
     public const int FloatFieldFieldNumber = 11;
     private static readonly pb::FieldCodec<float?> _single_floatField_codec = pb::FieldCodec.ForStructWrapper<float>(90);
     private float? floatField_;
@@ -315,6 +333,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "int64_field" field.</summary>
     public const int Int64FieldFieldNumber = 12;
     private static readonly pb::FieldCodec<long?> _single_int64Field_codec = pb::FieldCodec.ForStructWrapper<long>(98);
     private long? int64Field_;
@@ -325,6 +344,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "uint64_field" field.</summary>
     public const int Uint64FieldFieldNumber = 13;
     private static readonly pb::FieldCodec<ulong?> _single_uint64Field_codec = pb::FieldCodec.ForStructWrapper<ulong>(106);
     private ulong? uint64Field_;
@@ -335,6 +355,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "int32_field" field.</summary>
     public const int Int32FieldFieldNumber = 14;
     private static readonly pb::FieldCodec<int?> _single_int32Field_codec = pb::FieldCodec.ForStructWrapper<int>(114);
     private int? int32Field_;
@@ -345,6 +366,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "uint32_field" field.</summary>
     public const int Uint32FieldFieldNumber = 15;
     private static readonly pb::FieldCodec<uint?> _single_uint32Field_codec = pb::FieldCodec.ForStructWrapper<uint>(122);
     private uint? uint32Field_;
@@ -355,6 +377,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "bool_field" field.</summary>
     public const int BoolFieldFieldNumber = 16;
     private static readonly pb::FieldCodec<bool?> _single_boolField_codec = pb::FieldCodec.ForStructWrapper<bool>(130);
     private bool? boolField_;
@@ -365,6 +388,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "string_field" field.</summary>
     public const int StringFieldFieldNumber = 17;
     private static readonly pb::FieldCodec<string> _single_stringField_codec = pb::FieldCodec.ForClassWrapper<string>(138);
     private string stringField_;
@@ -375,6 +399,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "bytes_field" field.</summary>
     public const int BytesFieldFieldNumber = 18;
     private static readonly pb::FieldCodec<pb::ByteString> _single_bytesField_codec = pb::FieldCodec.ForClassWrapper<pb::ByteString>(146);
     private pb::ByteString bytesField_;
@@ -813,6 +838,9 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  A repeated field for each well-known type.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class RepeatedWellKnownTypes : pb::IMessage<RepeatedWellKnownTypes> {
     private static readonly pb::MessageParser<RepeatedWellKnownTypes> _parser = new pb::MessageParser<RepeatedWellKnownTypes>(() => new RepeatedWellKnownTypes());
@@ -857,6 +885,7 @@ namespace Google.Protobuf.TestProtos {
       return new RepeatedWellKnownTypes(this);
     }
 
+    /// <summary>Field number for the "any_field" field.</summary>
     public const int AnyFieldFieldNumber = 1;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Any> _repeated_anyField_codec
         = pb::FieldCodec.ForMessage(10, global::Google.Protobuf.WellKnownTypes.Any.Parser);
@@ -865,6 +894,7 @@ namespace Google.Protobuf.TestProtos {
       get { return anyField_; }
     }
 
+    /// <summary>Field number for the "api_field" field.</summary>
     public const int ApiFieldFieldNumber = 2;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Api> _repeated_apiField_codec
         = pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.Api.Parser);
@@ -873,6 +903,7 @@ namespace Google.Protobuf.TestProtos {
       get { return apiField_; }
     }
 
+    /// <summary>Field number for the "duration_field" field.</summary>
     public const int DurationFieldFieldNumber = 3;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Duration> _repeated_durationField_codec
         = pb::FieldCodec.ForMessage(26, global::Google.Protobuf.WellKnownTypes.Duration.Parser);
@@ -881,6 +912,7 @@ namespace Google.Protobuf.TestProtos {
       get { return durationField_; }
     }
 
+    /// <summary>Field number for the "empty_field" field.</summary>
     public const int EmptyFieldFieldNumber = 4;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Empty> _repeated_emptyField_codec
         = pb::FieldCodec.ForMessage(34, global::Google.Protobuf.WellKnownTypes.Empty.Parser);
@@ -889,6 +921,7 @@ namespace Google.Protobuf.TestProtos {
       get { return emptyField_; }
     }
 
+    /// <summary>Field number for the "field_mask_field" field.</summary>
     public const int FieldMaskFieldFieldNumber = 5;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.FieldMask> _repeated_fieldMaskField_codec
         = pb::FieldCodec.ForMessage(42, global::Google.Protobuf.WellKnownTypes.FieldMask.Parser);
@@ -897,6 +930,7 @@ namespace Google.Protobuf.TestProtos {
       get { return fieldMaskField_; }
     }
 
+    /// <summary>Field number for the "source_context_field" field.</summary>
     public const int SourceContextFieldFieldNumber = 6;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.SourceContext> _repeated_sourceContextField_codec
         = pb::FieldCodec.ForMessage(50, global::Google.Protobuf.WellKnownTypes.SourceContext.Parser);
@@ -905,6 +939,7 @@ namespace Google.Protobuf.TestProtos {
       get { return sourceContextField_; }
     }
 
+    /// <summary>Field number for the "struct_field" field.</summary>
     public const int StructFieldFieldNumber = 7;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Struct> _repeated_structField_codec
         = pb::FieldCodec.ForMessage(58, global::Google.Protobuf.WellKnownTypes.Struct.Parser);
@@ -913,6 +948,7 @@ namespace Google.Protobuf.TestProtos {
       get { return structField_; }
     }
 
+    /// <summary>Field number for the "timestamp_field" field.</summary>
     public const int TimestampFieldFieldNumber = 8;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Timestamp> _repeated_timestampField_codec
         = pb::FieldCodec.ForMessage(66, global::Google.Protobuf.WellKnownTypes.Timestamp.Parser);
@@ -921,6 +957,7 @@ namespace Google.Protobuf.TestProtos {
       get { return timestampField_; }
     }
 
+    /// <summary>Field number for the "type_field" field.</summary>
     public const int TypeFieldFieldNumber = 9;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Type> _repeated_typeField_codec
         = pb::FieldCodec.ForMessage(74, global::Google.Protobuf.WellKnownTypes.Type.Parser);
@@ -929,14 +966,19 @@ namespace Google.Protobuf.TestProtos {
       get { return typeField_; }
     }
 
+    /// <summary>Field number for the "double_field" field.</summary>
     public const int DoubleFieldFieldNumber = 10;
     private static readonly pb::FieldCodec<double?> _repeated_doubleField_codec
         = pb::FieldCodec.ForStructWrapper<double>(82);
     private readonly pbc::RepeatedField<double?> doubleField_ = new pbc::RepeatedField<double?>();
+    /// <summary>
+    ///  These don't actually make a lot of sense, but they're not prohibited...
+    /// </summary>
     public pbc::RepeatedField<double?> DoubleField {
       get { return doubleField_; }
     }
 
+    /// <summary>Field number for the "float_field" field.</summary>
     public const int FloatFieldFieldNumber = 11;
     private static readonly pb::FieldCodec<float?> _repeated_floatField_codec
         = pb::FieldCodec.ForStructWrapper<float>(90);
@@ -945,6 +987,7 @@ namespace Google.Protobuf.TestProtos {
       get { return floatField_; }
     }
 
+    /// <summary>Field number for the "int64_field" field.</summary>
     public const int Int64FieldFieldNumber = 12;
     private static readonly pb::FieldCodec<long?> _repeated_int64Field_codec
         = pb::FieldCodec.ForStructWrapper<long>(98);
@@ -953,6 +996,7 @@ namespace Google.Protobuf.TestProtos {
       get { return int64Field_; }
     }
 
+    /// <summary>Field number for the "uint64_field" field.</summary>
     public const int Uint64FieldFieldNumber = 13;
     private static readonly pb::FieldCodec<ulong?> _repeated_uint64Field_codec
         = pb::FieldCodec.ForStructWrapper<ulong>(106);
@@ -961,6 +1005,7 @@ namespace Google.Protobuf.TestProtos {
       get { return uint64Field_; }
     }
 
+    /// <summary>Field number for the "int32_field" field.</summary>
     public const int Int32FieldFieldNumber = 14;
     private static readonly pb::FieldCodec<int?> _repeated_int32Field_codec
         = pb::FieldCodec.ForStructWrapper<int>(114);
@@ -969,6 +1014,7 @@ namespace Google.Protobuf.TestProtos {
       get { return int32Field_; }
     }
 
+    /// <summary>Field number for the "uint32_field" field.</summary>
     public const int Uint32FieldFieldNumber = 15;
     private static readonly pb::FieldCodec<uint?> _repeated_uint32Field_codec
         = pb::FieldCodec.ForStructWrapper<uint>(122);
@@ -977,6 +1023,7 @@ namespace Google.Protobuf.TestProtos {
       get { return uint32Field_; }
     }
 
+    /// <summary>Field number for the "bool_field" field.</summary>
     public const int BoolFieldFieldNumber = 16;
     private static readonly pb::FieldCodec<bool?> _repeated_boolField_codec
         = pb::FieldCodec.ForStructWrapper<bool>(130);
@@ -985,6 +1032,7 @@ namespace Google.Protobuf.TestProtos {
       get { return boolField_; }
     }
 
+    /// <summary>Field number for the "string_field" field.</summary>
     public const int StringFieldFieldNumber = 17;
     private static readonly pb::FieldCodec<string> _repeated_stringField_codec
         = pb::FieldCodec.ForClassWrapper<string>(138);
@@ -993,6 +1041,7 @@ namespace Google.Protobuf.TestProtos {
       get { return stringField_; }
     }
 
+    /// <summary>Field number for the "bytes_field" field.</summary>
     public const int BytesFieldFieldNumber = 18;
     private static readonly pb::FieldCodec<pb::ByteString> _repeated_bytesField_codec
         = pb::FieldCodec.ForClassWrapper<pb::ByteString>(146);
@@ -1296,6 +1345,7 @@ namespace Google.Protobuf.TestProtos {
       return new OneofWellKnownTypes(this);
     }
 
+    /// <summary>Field number for the "any_field" field.</summary>
     public const int AnyFieldFieldNumber = 1;
     public global::Google.Protobuf.WellKnownTypes.Any AnyField {
       get { return oneofFieldCase_ == OneofFieldOneofCase.AnyField ? (global::Google.Protobuf.WellKnownTypes.Any) oneofField_ : null; }
@@ -1305,6 +1355,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "api_field" field.</summary>
     public const int ApiFieldFieldNumber = 2;
     public global::Google.Protobuf.WellKnownTypes.Api ApiField {
       get { return oneofFieldCase_ == OneofFieldOneofCase.ApiField ? (global::Google.Protobuf.WellKnownTypes.Api) oneofField_ : null; }
@@ -1314,6 +1365,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "duration_field" field.</summary>
     public const int DurationFieldFieldNumber = 3;
     public global::Google.Protobuf.WellKnownTypes.Duration DurationField {
       get { return oneofFieldCase_ == OneofFieldOneofCase.DurationField ? (global::Google.Protobuf.WellKnownTypes.Duration) oneofField_ : null; }
@@ -1323,6 +1375,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "empty_field" field.</summary>
     public const int EmptyFieldFieldNumber = 4;
     public global::Google.Protobuf.WellKnownTypes.Empty EmptyField {
       get { return oneofFieldCase_ == OneofFieldOneofCase.EmptyField ? (global::Google.Protobuf.WellKnownTypes.Empty) oneofField_ : null; }
@@ -1332,6 +1385,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "field_mask_field" field.</summary>
     public const int FieldMaskFieldFieldNumber = 5;
     public global::Google.Protobuf.WellKnownTypes.FieldMask FieldMaskField {
       get { return oneofFieldCase_ == OneofFieldOneofCase.FieldMaskField ? (global::Google.Protobuf.WellKnownTypes.FieldMask) oneofField_ : null; }
@@ -1341,6 +1395,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "source_context_field" field.</summary>
     public const int SourceContextFieldFieldNumber = 6;
     public global::Google.Protobuf.WellKnownTypes.SourceContext SourceContextField {
       get { return oneofFieldCase_ == OneofFieldOneofCase.SourceContextField ? (global::Google.Protobuf.WellKnownTypes.SourceContext) oneofField_ : null; }
@@ -1350,6 +1405,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "struct_field" field.</summary>
     public const int StructFieldFieldNumber = 7;
     public global::Google.Protobuf.WellKnownTypes.Struct StructField {
       get { return oneofFieldCase_ == OneofFieldOneofCase.StructField ? (global::Google.Protobuf.WellKnownTypes.Struct) oneofField_ : null; }
@@ -1359,6 +1415,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "timestamp_field" field.</summary>
     public const int TimestampFieldFieldNumber = 8;
     public global::Google.Protobuf.WellKnownTypes.Timestamp TimestampField {
       get { return oneofFieldCase_ == OneofFieldOneofCase.TimestampField ? (global::Google.Protobuf.WellKnownTypes.Timestamp) oneofField_ : null; }
@@ -1368,6 +1425,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "type_field" field.</summary>
     public const int TypeFieldFieldNumber = 9;
     public global::Google.Protobuf.WellKnownTypes.Type TypeField {
       get { return oneofFieldCase_ == OneofFieldOneofCase.TypeField ? (global::Google.Protobuf.WellKnownTypes.Type) oneofField_ : null; }
@@ -1377,6 +1435,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "double_field" field.</summary>
     public const int DoubleFieldFieldNumber = 10;
     private static readonly pb::FieldCodec<double?> _oneof_doubleField_codec = pb::FieldCodec.ForStructWrapper<double>(82);
     public double? DoubleField {
@@ -1387,6 +1446,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "float_field" field.</summary>
     public const int FloatFieldFieldNumber = 11;
     private static readonly pb::FieldCodec<float?> _oneof_floatField_codec = pb::FieldCodec.ForStructWrapper<float>(90);
     public float? FloatField {
@@ -1397,6 +1457,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "int64_field" field.</summary>
     public const int Int64FieldFieldNumber = 12;
     private static readonly pb::FieldCodec<long?> _oneof_int64Field_codec = pb::FieldCodec.ForStructWrapper<long>(98);
     public long? Int64Field {
@@ -1407,6 +1468,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "uint64_field" field.</summary>
     public const int Uint64FieldFieldNumber = 13;
     private static readonly pb::FieldCodec<ulong?> _oneof_uint64Field_codec = pb::FieldCodec.ForStructWrapper<ulong>(106);
     public ulong? Uint64Field {
@@ -1417,6 +1479,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "int32_field" field.</summary>
     public const int Int32FieldFieldNumber = 14;
     private static readonly pb::FieldCodec<int?> _oneof_int32Field_codec = pb::FieldCodec.ForStructWrapper<int>(114);
     public int? Int32Field {
@@ -1427,6 +1490,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "uint32_field" field.</summary>
     public const int Uint32FieldFieldNumber = 15;
     private static readonly pb::FieldCodec<uint?> _oneof_uint32Field_codec = pb::FieldCodec.ForStructWrapper<uint>(122);
     public uint? Uint32Field {
@@ -1437,6 +1501,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "bool_field" field.</summary>
     public const int BoolFieldFieldNumber = 16;
     private static readonly pb::FieldCodec<bool?> _oneof_boolField_codec = pb::FieldCodec.ForStructWrapper<bool>(130);
     public bool? BoolField {
@@ -1447,6 +1512,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "string_field" field.</summary>
     public const int StringFieldFieldNumber = 17;
     private static readonly pb::FieldCodec<string> _oneof_stringField_codec = pb::FieldCodec.ForClassWrapper<string>(138);
     public string StringField {
@@ -1457,6 +1523,7 @@ namespace Google.Protobuf.TestProtos {
       }
     }
 
+    /// <summary>Field number for the "bytes_field" field.</summary>
     public const int BytesFieldFieldNumber = 18;
     private static readonly pb::FieldCodec<pb::ByteString> _oneof_bytesField_codec = pb::FieldCodec.ForClassWrapper<pb::ByteString>(146);
     public pb::ByteString BytesField {
@@ -1468,6 +1535,7 @@ namespace Google.Protobuf.TestProtos {
     }
 
     private object oneofField_;
+    /// <summary>Enum of possible cases for the "oneof_field" oneof.</summary>
     public enum OneofFieldOneofCase {
       None = 0,
       AnyField = 1,
@@ -1876,6 +1944,11 @@ namespace Google.Protobuf.TestProtos {
 
   }
 
+  /// <summary>
+  ///  A map field for each well-known type. We only
+  ///  need to worry about the value part of the map being the
+  ///  well-known types, as messages can't be map keys.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class MapWellKnownTypes : pb::IMessage<MapWellKnownTypes> {
     private static readonly pb::MessageParser<MapWellKnownTypes> _parser = new pb::MessageParser<MapWellKnownTypes>(() => new MapWellKnownTypes());
@@ -1920,6 +1993,7 @@ namespace Google.Protobuf.TestProtos {
       return new MapWellKnownTypes(this);
     }
 
+    /// <summary>Field number for the "any_field" field.</summary>
     public const int AnyFieldFieldNumber = 1;
     private static readonly pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Any>.Codec _map_anyField_codec
         = new pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Any>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.Any.Parser), 10);
@@ -1928,6 +2002,7 @@ namespace Google.Protobuf.TestProtos {
       get { return anyField_; }
     }
 
+    /// <summary>Field number for the "api_field" field.</summary>
     public const int ApiFieldFieldNumber = 2;
     private static readonly pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Api>.Codec _map_apiField_codec
         = new pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Api>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.Api.Parser), 18);
@@ -1936,6 +2011,7 @@ namespace Google.Protobuf.TestProtos {
       get { return apiField_; }
     }
 
+    /// <summary>Field number for the "duration_field" field.</summary>
     public const int DurationFieldFieldNumber = 3;
     private static readonly pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Duration>.Codec _map_durationField_codec
         = new pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Duration>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.Duration.Parser), 26);
@@ -1944,6 +2020,7 @@ namespace Google.Protobuf.TestProtos {
       get { return durationField_; }
     }
 
+    /// <summary>Field number for the "empty_field" field.</summary>
     public const int EmptyFieldFieldNumber = 4;
     private static readonly pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Empty>.Codec _map_emptyField_codec
         = new pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Empty>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.Empty.Parser), 34);
@@ -1952,6 +2029,7 @@ namespace Google.Protobuf.TestProtos {
       get { return emptyField_; }
     }
 
+    /// <summary>Field number for the "field_mask_field" field.</summary>
     public const int FieldMaskFieldFieldNumber = 5;
     private static readonly pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.FieldMask>.Codec _map_fieldMaskField_codec
         = new pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.FieldMask>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.FieldMask.Parser), 42);
@@ -1960,6 +2038,7 @@ namespace Google.Protobuf.TestProtos {
       get { return fieldMaskField_; }
     }
 
+    /// <summary>Field number for the "source_context_field" field.</summary>
     public const int SourceContextFieldFieldNumber = 6;
     private static readonly pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.SourceContext>.Codec _map_sourceContextField_codec
         = new pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.SourceContext>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.SourceContext.Parser), 50);
@@ -1968,6 +2047,7 @@ namespace Google.Protobuf.TestProtos {
       get { return sourceContextField_; }
     }
 
+    /// <summary>Field number for the "struct_field" field.</summary>
     public const int StructFieldFieldNumber = 7;
     private static readonly pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Struct>.Codec _map_structField_codec
         = new pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Struct>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.Struct.Parser), 58);
@@ -1976,6 +2056,7 @@ namespace Google.Protobuf.TestProtos {
       get { return structField_; }
     }
 
+    /// <summary>Field number for the "timestamp_field" field.</summary>
     public const int TimestampFieldFieldNumber = 8;
     private static readonly pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Timestamp>.Codec _map_timestampField_codec
         = new pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Timestamp>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.Timestamp.Parser), 66);
@@ -1984,6 +2065,7 @@ namespace Google.Protobuf.TestProtos {
       get { return timestampField_; }
     }
 
+    /// <summary>Field number for the "type_field" field.</summary>
     public const int TypeFieldFieldNumber = 9;
     private static readonly pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Type>.Codec _map_typeField_codec
         = new pbc::MapField<int, global::Google.Protobuf.WellKnownTypes.Type>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.Type.Parser), 74);
@@ -1992,6 +2074,7 @@ namespace Google.Protobuf.TestProtos {
       get { return typeField_; }
     }
 
+    /// <summary>Field number for the "double_field" field.</summary>
     public const int DoubleFieldFieldNumber = 10;
     private static readonly pbc::MapField<int, double?>.Codec _map_doubleField_codec
         = new pbc::MapField<int, double?>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForStructWrapper<double>(18), 82);
@@ -2000,6 +2083,7 @@ namespace Google.Protobuf.TestProtos {
       get { return doubleField_; }
     }
 
+    /// <summary>Field number for the "float_field" field.</summary>
     public const int FloatFieldFieldNumber = 11;
     private static readonly pbc::MapField<int, float?>.Codec _map_floatField_codec
         = new pbc::MapField<int, float?>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForStructWrapper<float>(18), 90);
@@ -2008,6 +2092,7 @@ namespace Google.Protobuf.TestProtos {
       get { return floatField_; }
     }
 
+    /// <summary>Field number for the "int64_field" field.</summary>
     public const int Int64FieldFieldNumber = 12;
     private static readonly pbc::MapField<int, long?>.Codec _map_int64Field_codec
         = new pbc::MapField<int, long?>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForStructWrapper<long>(18), 98);
@@ -2016,6 +2101,7 @@ namespace Google.Protobuf.TestProtos {
       get { return int64Field_; }
     }
 
+    /// <summary>Field number for the "uint64_field" field.</summary>
     public const int Uint64FieldFieldNumber = 13;
     private static readonly pbc::MapField<int, ulong?>.Codec _map_uint64Field_codec
         = new pbc::MapField<int, ulong?>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForStructWrapper<ulong>(18), 106);
@@ -2024,6 +2110,7 @@ namespace Google.Protobuf.TestProtos {
       get { return uint64Field_; }
     }
 
+    /// <summary>Field number for the "int32_field" field.</summary>
     public const int Int32FieldFieldNumber = 14;
     private static readonly pbc::MapField<int, int?>.Codec _map_int32Field_codec
         = new pbc::MapField<int, int?>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForStructWrapper<int>(18), 114);
@@ -2032,6 +2119,7 @@ namespace Google.Protobuf.TestProtos {
       get { return int32Field_; }
     }
 
+    /// <summary>Field number for the "uint32_field" field.</summary>
     public const int Uint32FieldFieldNumber = 15;
     private static readonly pbc::MapField<int, uint?>.Codec _map_uint32Field_codec
         = new pbc::MapField<int, uint?>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForStructWrapper<uint>(18), 122);
@@ -2040,6 +2128,7 @@ namespace Google.Protobuf.TestProtos {
       get { return uint32Field_; }
     }
 
+    /// <summary>Field number for the "bool_field" field.</summary>
     public const int BoolFieldFieldNumber = 16;
     private static readonly pbc::MapField<int, bool?>.Codec _map_boolField_codec
         = new pbc::MapField<int, bool?>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForStructWrapper<bool>(18), 130);
@@ -2048,6 +2137,7 @@ namespace Google.Protobuf.TestProtos {
       get { return boolField_; }
     }
 
+    /// <summary>Field number for the "string_field" field.</summary>
     public const int StringFieldFieldNumber = 17;
     private static readonly pbc::MapField<int, string>.Codec _map_stringField_codec
         = new pbc::MapField<int, string>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForClassWrapper<string>(18), 138);
@@ -2056,6 +2146,7 @@ namespace Google.Protobuf.TestProtos {
       get { return stringField_; }
     }
 
+    /// <summary>Field number for the "bytes_field" field.</summary>
     public const int BytesFieldFieldNumber = 18;
     private static readonly pbc::MapField<int, pb::ByteString>.Codec _map_bytesField_codec
         = new pbc::MapField<int, pb::ByteString>.Codec(pb::FieldCodec.ForInt32(8), pb::FieldCodec.ForClassWrapper<pb::ByteString>(18), 146);
diff --git a/csharp/src/Google.Protobuf.Test/WellKnownTypes/AnyTest.cs b/csharp/src/Google.Protobuf.Test/WellKnownTypes/AnyTest.cs
new file mode 100644
index 00000000..0a2b8b32
--- /dev/null
+++ b/csharp/src/Google.Protobuf.Test/WellKnownTypes/AnyTest.cs
@@ -0,0 +1,66 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2015 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#endregion
+
+using Google.Protobuf.TestProtos;
+using NUnit.Framework;
+
+namespace Google.Protobuf.WellKnownTypes
+{
+    public class AnyTest
+    {
+        [Test]
+        public void Pack()
+        {
+            var message = SampleMessages.CreateFullTestAllTypes();
+            var any = Any.Pack(message);
+            Assert.AreEqual("type.googleapis.com/protobuf_unittest.TestAllTypes", any.TypeUrl);
+            Assert.AreEqual(message.CalculateSize(), any.Value.Length);
+        }
+
+        [Test]
+        public void Unpack_WrongType()
+        {
+            var message = SampleMessages.CreateFullTestAllTypes();
+            var any = Any.Pack(message);
+            Assert.Throws<InvalidProtocolBufferException>(() => any.Unpack<TestOneof>());
+        }
+
+        [Test]
+        public void Unpack_Success()
+        {
+            var message = SampleMessages.CreateFullTestAllTypes();
+            var any = Any.Pack(message);
+            var unpacked = any.Unpack<TestAllTypes>();
+            Assert.AreEqual(message, unpacked);
+        }
+    }
+}
diff --git a/csharp/src/Google.Protobuf/CodedInputStream.cs b/csharp/src/Google.Protobuf/CodedInputStream.cs
index 82c6ceab..65d0e710 100644
--- a/csharp/src/Google.Protobuf/CodedInputStream.cs
+++ b/csharp/src/Google.Protobuf/CodedInputStream.cs
@@ -38,7 +38,7 @@ using System.IO;
 namespace Google.Protobuf
 {
     /// <summary>
-    /// Readings and decodes protocol message fields.
+    /// Reads and decodes protocol message fields.
     /// </summary>
     /// <remarks>
     /// <para>
diff --git a/csharp/src/Google.Protobuf/Google.Protobuf.csproj b/csharp/src/Google.Protobuf/Google.Protobuf.csproj
index a17bf81c..8c680d46 100644
--- a/csharp/src/Google.Protobuf/Google.Protobuf.csproj
+++ b/csharp/src/Google.Protobuf/Google.Protobuf.csproj
@@ -118,6 +118,7 @@
     <Compile Include="Reflection\SingleFieldAccessor.cs" />
     <Compile Include="Preconditions.cs" />
     <Compile Include="WellKnownTypes\Any.cs" />
+    <Compile Include="WellKnownTypes\AnyPartial.cs" />
     <Compile Include="WellKnownTypes\Api.cs" />
     <Compile Include="WellKnownTypes\Duration.cs" />
     <Compile Include="WellKnownTypes\DurationPartial.cs" />
diff --git a/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs b/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs
index 759955e6..99ca4bf3 100644
--- a/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs
+++ b/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs
@@ -96,6 +96,8 @@ namespace Google.Protobuf.Reflection
                 return descriptor;
             }
 
+            // dependencies contains direct dependencies and any *public* dependencies
+            // of those dependencies (transitively)... so we don't need to recurse here.
             foreach (FileDescriptor dependency in dependencies)
             {
                 dependency.DescriptorPool.descriptorsByName.TryGetValue(fullName, out result);
diff --git a/csharp/src/Google.Protobuf/Reflection/DescriptorProtoFile.cs b/csharp/src/Google.Protobuf/Reflection/DescriptorProtoFile.cs
index f9158cab..1e6a77ab 100644
--- a/csharp/src/Google.Protobuf/Reflection/DescriptorProtoFile.cs
+++ b/csharp/src/Google.Protobuf/Reflection/DescriptorProtoFile.cs
@@ -9,10 +9,12 @@ using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
 namespace Google.Protobuf.Reflection {
 
+  /// <summary>Holder for reflection information generated from google/protobuf/descriptor.proto</summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   internal static partial class DescriptorProtoFile {
 
     #region Descriptor
+    /// <summary>File descriptor for google/protobuf/descriptor.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
@@ -21,117 +23,117 @@ namespace Google.Protobuf.Reflection {
     static DescriptorProtoFile() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "CiBnb29nbGUvcHJvdG9idWYvZGVzY3JpcHRvci5wcm90bxIPZ29vZ2xlLnBy", 
-            "b3RvYnVmIkcKEUZpbGVEZXNjcmlwdG9yU2V0EjIKBGZpbGUYASADKAsyJC5n", 
-            "b29nbGUucHJvdG9idWYuRmlsZURlc2NyaXB0b3JQcm90byLbAwoTRmlsZURl", 
-            "c2NyaXB0b3JQcm90bxIMCgRuYW1lGAEgASgJEg8KB3BhY2thZ2UYAiABKAkS", 
-            "EgoKZGVwZW5kZW5jeRgDIAMoCRIZChFwdWJsaWNfZGVwZW5kZW5jeRgKIAMo", 
-            "BRIXCg93ZWFrX2RlcGVuZGVuY3kYCyADKAUSNgoMbWVzc2FnZV90eXBlGAQg", 
-            "AygLMiAuZ29vZ2xlLnByb3RvYnVmLkRlc2NyaXB0b3JQcm90bxI3CgllbnVt", 
-            "X3R5cGUYBSADKAsyJC5nb29nbGUucHJvdG9idWYuRW51bURlc2NyaXB0b3JQ", 
-            "cm90bxI4CgdzZXJ2aWNlGAYgAygLMicuZ29vZ2xlLnByb3RvYnVmLlNlcnZp", 
-            "Y2VEZXNjcmlwdG9yUHJvdG8SOAoJZXh0ZW5zaW9uGAcgAygLMiUuZ29vZ2xl", 
-            "LnByb3RvYnVmLkZpZWxkRGVzY3JpcHRvclByb3RvEi0KB29wdGlvbnMYCCAB", 
-            "KAsyHC5nb29nbGUucHJvdG9idWYuRmlsZU9wdGlvbnMSOQoQc291cmNlX2Nv", 
-            "ZGVfaW5mbxgJIAEoCzIfLmdvb2dsZS5wcm90b2J1Zi5Tb3VyY2VDb2RlSW5m", 
-            "bxIOCgZzeW50YXgYDCABKAki8AQKD0Rlc2NyaXB0b3JQcm90bxIMCgRuYW1l", 
-            "GAEgASgJEjQKBWZpZWxkGAIgAygLMiUuZ29vZ2xlLnByb3RvYnVmLkZpZWxk", 
-            "RGVzY3JpcHRvclByb3RvEjgKCWV4dGVuc2lvbhgGIAMoCzIlLmdvb2dsZS5w", 
-            "cm90b2J1Zi5GaWVsZERlc2NyaXB0b3JQcm90bxI1CgtuZXN0ZWRfdHlwZRgD", 
-            "IAMoCzIgLmdvb2dsZS5wcm90b2J1Zi5EZXNjcmlwdG9yUHJvdG8SNwoJZW51", 
-            "bV90eXBlGAQgAygLMiQuZ29vZ2xlLnByb3RvYnVmLkVudW1EZXNjcmlwdG9y", 
-            "UHJvdG8SSAoPZXh0ZW5zaW9uX3JhbmdlGAUgAygLMi8uZ29vZ2xlLnByb3Rv", 
-            "YnVmLkRlc2NyaXB0b3JQcm90by5FeHRlbnNpb25SYW5nZRI5CgpvbmVvZl9k", 
-            "ZWNsGAggAygLMiUuZ29vZ2xlLnByb3RvYnVmLk9uZW9mRGVzY3JpcHRvclBy", 
-            "b3RvEjAKB29wdGlvbnMYByABKAsyHy5nb29nbGUucHJvdG9idWYuTWVzc2Fn", 
-            "ZU9wdGlvbnMSRgoOcmVzZXJ2ZWRfcmFuZ2UYCSADKAsyLi5nb29nbGUucHJv", 
-            "dG9idWYuRGVzY3JpcHRvclByb3RvLlJlc2VydmVkUmFuZ2USFQoNcmVzZXJ2", 
-            "ZWRfbmFtZRgKIAMoCRosCg5FeHRlbnNpb25SYW5nZRINCgVzdGFydBgBIAEo", 
-            "BRILCgNlbmQYAiABKAUaKwoNUmVzZXJ2ZWRSYW5nZRINCgVzdGFydBgBIAEo", 
-            "BRILCgNlbmQYAiABKAUiqQUKFEZpZWxkRGVzY3JpcHRvclByb3RvEgwKBG5h", 
-            "bWUYASABKAkSDgoGbnVtYmVyGAMgASgFEjoKBWxhYmVsGAQgASgOMisuZ29v", 
-            "Z2xlLnByb3RvYnVmLkZpZWxkRGVzY3JpcHRvclByb3RvLkxhYmVsEjgKBHR5", 
-            "cGUYBSABKA4yKi5nb29nbGUucHJvdG9idWYuRmllbGREZXNjcmlwdG9yUHJv", 
-            "dG8uVHlwZRIRCgl0eXBlX25hbWUYBiABKAkSEAoIZXh0ZW5kZWUYAiABKAkS", 
-            "FQoNZGVmYXVsdF92YWx1ZRgHIAEoCRITCgtvbmVvZl9pbmRleBgJIAEoBRIu", 
-            "CgdvcHRpb25zGAggASgLMh0uZ29vZ2xlLnByb3RvYnVmLkZpZWxkT3B0aW9u", 
-            "cyK2AgoEVHlwZRIPCgtUWVBFX0RPVUJMRRABEg4KClRZUEVfRkxPQVQQAhIO", 
-            "CgpUWVBFX0lOVDY0EAMSDwoLVFlQRV9VSU5UNjQQBBIOCgpUWVBFX0lOVDMy", 
-            "EAUSEAoMVFlQRV9GSVhFRDY0EAYSEAoMVFlQRV9GSVhFRDMyEAcSDQoJVFlQ", 
-            "RV9CT09MEAgSDwoLVFlQRV9TVFJJTkcQCRIOCgpUWVBFX0dST1VQEAoSEAoM", 
-            "VFlQRV9NRVNTQUdFEAsSDgoKVFlQRV9CWVRFUxAMEg8KC1RZUEVfVUlOVDMy", 
-            "EA0SDQoJVFlQRV9FTlVNEA4SEQoNVFlQRV9TRklYRUQzMhAPEhEKDVRZUEVf", 
-            "U0ZJWEVENjQQEBIPCgtUWVBFX1NJTlQzMhAREg8KC1RZUEVfU0lOVDY0EBIi", 
-            "QwoFTGFiZWwSEgoOTEFCRUxfT1BUSU9OQUwQARISCg5MQUJFTF9SRVFVSVJF", 
-            "RBACEhIKDkxBQkVMX1JFUEVBVEVEEAMiJAoUT25lb2ZEZXNjcmlwdG9yUHJv", 
-            "dG8SDAoEbmFtZRgBIAEoCSKMAQoTRW51bURlc2NyaXB0b3JQcm90bxIMCgRu", 
-            "YW1lGAEgASgJEjgKBXZhbHVlGAIgAygLMikuZ29vZ2xlLnByb3RvYnVmLkVu", 
-            "dW1WYWx1ZURlc2NyaXB0b3JQcm90bxItCgdvcHRpb25zGAMgASgLMhwuZ29v", 
-            "Z2xlLnByb3RvYnVmLkVudW1PcHRpb25zImwKGEVudW1WYWx1ZURlc2NyaXB0", 
-            "b3JQcm90bxIMCgRuYW1lGAEgASgJEg4KBm51bWJlchgCIAEoBRIyCgdvcHRp", 
-            "b25zGAMgASgLMiEuZ29vZ2xlLnByb3RvYnVmLkVudW1WYWx1ZU9wdGlvbnMi", 
-            "kAEKFlNlcnZpY2VEZXNjcmlwdG9yUHJvdG8SDAoEbmFtZRgBIAEoCRI2CgZt", 
-            "ZXRob2QYAiADKAsyJi5nb29nbGUucHJvdG9idWYuTWV0aG9kRGVzY3JpcHRv", 
-            "clByb3RvEjAKB29wdGlvbnMYAyABKAsyHy5nb29nbGUucHJvdG9idWYuU2Vy", 
-            "dmljZU9wdGlvbnMiwQEKFU1ldGhvZERlc2NyaXB0b3JQcm90bxIMCgRuYW1l", 
-            "GAEgASgJEhIKCmlucHV0X3R5cGUYAiABKAkSEwoLb3V0cHV0X3R5cGUYAyAB", 
-            "KAkSLwoHb3B0aW9ucxgEIAEoCzIeLmdvb2dsZS5wcm90b2J1Zi5NZXRob2RP", 
-            "cHRpb25zEh8KEGNsaWVudF9zdHJlYW1pbmcYBSABKAg6BWZhbHNlEh8KEHNl", 
-            "cnZlcl9zdHJlYW1pbmcYBiABKAg6BWZhbHNlIqoFCgtGaWxlT3B0aW9ucxIU", 
-            "CgxqYXZhX3BhY2thZ2UYASABKAkSHAoUamF2YV9vdXRlcl9jbGFzc25hbWUY", 
-            "CCABKAkSIgoTamF2YV9tdWx0aXBsZV9maWxlcxgKIAEoCDoFZmFsc2USLAod", 
-            "amF2YV9nZW5lcmF0ZV9lcXVhbHNfYW5kX2hhc2gYFCABKAg6BWZhbHNlEiUK", 
-            "FmphdmFfc3RyaW5nX2NoZWNrX3V0ZjgYGyABKAg6BWZhbHNlEkYKDG9wdGlt", 
-            "aXplX2ZvchgJIAEoDjIpLmdvb2dsZS5wcm90b2J1Zi5GaWxlT3B0aW9ucy5P", 
-            "cHRpbWl6ZU1vZGU6BVNQRUVEEhIKCmdvX3BhY2thZ2UYCyABKAkSIgoTY2Nf", 
-            "Z2VuZXJpY19zZXJ2aWNlcxgQIAEoCDoFZmFsc2USJAoVamF2YV9nZW5lcmlj", 
-            "X3NlcnZpY2VzGBEgASgIOgVmYWxzZRIiChNweV9nZW5lcmljX3NlcnZpY2Vz", 
-            "GBIgASgIOgVmYWxzZRIZCgpkZXByZWNhdGVkGBcgASgIOgVmYWxzZRIfChBj", 
-            "Y19lbmFibGVfYXJlbmFzGB8gASgIOgVmYWxzZRIZChFvYmpjX2NsYXNzX3By", 
-            "ZWZpeBgkIAEoCRIYChBjc2hhcnBfbmFtZXNwYWNlGCUgASgJEicKH2phdmFu", 
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+            "GAQgASgJEiEKGWxlYWRpbmdfZGV0YWNoZWRfY29tbWVudHMYBiADKAlCWAoT",
+            "Y29tLmdvb2dsZS5wcm90b2J1ZkIQRGVzY3JpcHRvclByb3Rvc0gBWgpkZXNj",
+            "cmlwdG9yogIDR1BCqgIaR29vZ2xlLlByb3RvYnVmLlJlZmxlY3Rpb24="));
       descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
           new pbr::FileDescriptor[] { },
           new pbr::GeneratedCodeInfo(null, new pbr::GeneratedCodeInfo[] {
@@ -160,6 +162,10 @@ namespace Google.Protobuf.Reflection {
 
   }
   #region Messages
+  /// <summary>
+  ///  The protocol compiler can output a FileDescriptorSet containing the .proto
+  ///  files it parses.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   internal sealed partial class FileDescriptorSet : pb::IMessage<FileDescriptorSet> {
     private static readonly pb::MessageParser<FileDescriptorSet> _parser = new pb::MessageParser<FileDescriptorSet>(() => new FileDescriptorSet());
@@ -187,6 +193,7 @@ namespace Google.Protobuf.Reflection {
       return new FileDescriptorSet(this);
     }
 
+    /// <summary>Field number for the "file" field.</summary>
     public const int FileFieldNumber = 1;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.FileDescriptorProto> _repeated_file_codec
         = pb::FieldCodec.ForMessage(10, global::Google.Protobuf.Reflection.FileDescriptorProto.Parser);
@@ -254,6 +261,9 @@ namespace Google.Protobuf.Reflection {
 
   }
 
+  /// <summary>
+  ///  Describes a complete .proto file.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   internal sealed partial class FileDescriptorProto : pb::IMessage<FileDescriptorProto> {
     private static readonly pb::MessageParser<FileDescriptorProto> _parser = new pb::MessageParser<FileDescriptorProto>(() => new FileDescriptorProto());
@@ -292,8 +302,12 @@ namespace Google.Protobuf.Reflection {
       return new FileDescriptorProto(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
+    /// <summary>
+    ///  file name, relative to root of source tree
+    /// </summary>
     public string Name {
       get { return name_; }
       set {
@@ -301,8 +315,12 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "package" field.</summary>
     public const int PackageFieldNumber = 2;
     private string package_ = "";
+    /// <summary>
+    ///  e.g. "foo", "foo.bar", etc.
+    /// </summary>
     public string Package {
       get { return package_; }
       set {
@@ -310,38 +328,56 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "dependency" field.</summary>
     public const int DependencyFieldNumber = 3;
     private static readonly pb::FieldCodec<string> _repeated_dependency_codec
         = pb::FieldCodec.ForString(26);
     private readonly pbc::RepeatedField<string> dependency_ = new pbc::RepeatedField<string>();
+    /// <summary>
+    ///  Names of files imported by this file.
+    /// </summary>
     public pbc::RepeatedField<string> Dependency {
       get { return dependency_; }
     }
 
+    /// <summary>Field number for the "public_dependency" field.</summary>
     public const int PublicDependencyFieldNumber = 10;
     private static readonly pb::FieldCodec<int> _repeated_publicDependency_codec
         = pb::FieldCodec.ForInt32(80);
     private readonly pbc::RepeatedField<int> publicDependency_ = new pbc::RepeatedField<int>();
+    /// <summary>
+    ///  Indexes of the public imported files in the dependency list above.
+    /// </summary>
     public pbc::RepeatedField<int> PublicDependency {
       get { return publicDependency_; }
     }
 
+    /// <summary>Field number for the "weak_dependency" field.</summary>
     public const int WeakDependencyFieldNumber = 11;
     private static readonly pb::FieldCodec<int> _repeated_weakDependency_codec
         = pb::FieldCodec.ForInt32(88);
     private readonly pbc::RepeatedField<int> weakDependency_ = new pbc::RepeatedField<int>();
+    /// <summary>
+    ///  Indexes of the weak imported files in the dependency list.
+    ///  For Google-internal migration only. Do not use.
+    /// </summary>
     public pbc::RepeatedField<int> WeakDependency {
       get { return weakDependency_; }
     }
 
+    /// <summary>Field number for the "message_type" field.</summary>
     public const int MessageTypeFieldNumber = 4;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.DescriptorProto> _repeated_messageType_codec
         = pb::FieldCodec.ForMessage(34, global::Google.Protobuf.Reflection.DescriptorProto.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto> messageType_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto>();
+    /// <summary>
+    ///  All top-level definitions in this file.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto> MessageType {
       get { return messageType_; }
     }
 
+    /// <summary>Field number for the "enum_type" field.</summary>
     public const int EnumTypeFieldNumber = 5;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.EnumDescriptorProto> _repeated_enumType_codec
         = pb::FieldCodec.ForMessage(42, global::Google.Protobuf.Reflection.EnumDescriptorProto.Parser);
@@ -350,6 +386,7 @@ namespace Google.Protobuf.Reflection {
       get { return enumType_; }
     }
 
+    /// <summary>Field number for the "service" field.</summary>
     public const int ServiceFieldNumber = 6;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.ServiceDescriptorProto> _repeated_service_codec
         = pb::FieldCodec.ForMessage(50, global::Google.Protobuf.Reflection.ServiceDescriptorProto.Parser);
@@ -358,6 +395,7 @@ namespace Google.Protobuf.Reflection {
       get { return service_; }
     }
 
+    /// <summary>Field number for the "extension" field.</summary>
     public const int ExtensionFieldNumber = 7;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.FieldDescriptorProto> _repeated_extension_codec
         = pb::FieldCodec.ForMessage(58, global::Google.Protobuf.Reflection.FieldDescriptorProto.Parser);
@@ -366,6 +404,7 @@ namespace Google.Protobuf.Reflection {
       get { return extension_; }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 8;
     private global::Google.Protobuf.Reflection.FileOptions options_;
     public global::Google.Protobuf.Reflection.FileOptions Options {
@@ -375,8 +414,15 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "source_code_info" field.</summary>
     public const int SourceCodeInfoFieldNumber = 9;
     private global::Google.Protobuf.Reflection.SourceCodeInfo sourceCodeInfo_;
+    /// <summary>
+    ///  This field contains optional information about the original source code.
+    ///  You may safely remove this entire field without harming runtime
+    ///  functionality of the descriptors -- the information is needed only by
+    ///  development tools.
+    /// </summary>
     public global::Google.Protobuf.Reflection.SourceCodeInfo SourceCodeInfo {
       get { return sourceCodeInfo_; }
       set {
@@ -384,8 +430,13 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "syntax" field.</summary>
     public const int SyntaxFieldNumber = 12;
     private string syntax_ = "";
+    /// <summary>
+    ///  The syntax of the proto file.
+    ///  The supported values are "proto2" and "proto3".
+    /// </summary>
     public string Syntax {
       get { return syntax_; }
       set {
@@ -600,6 +651,9 @@ namespace Google.Protobuf.Reflection {
 
   }
 
+  /// <summary>
+  ///  Describes a message type.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   internal sealed partial class DescriptorProto : pb::IMessage<DescriptorProto> {
     private static readonly pb::MessageParser<DescriptorProto> _parser = new pb::MessageParser<DescriptorProto>(() => new DescriptorProto());
@@ -636,6 +690,7 @@ namespace Google.Protobuf.Reflection {
       return new DescriptorProto(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
     public string Name {
@@ -645,6 +700,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "field" field.</summary>
     public const int FieldFieldNumber = 2;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.FieldDescriptorProto> _repeated_field_codec
         = pb::FieldCodec.ForMessage(18, global::Google.Protobuf.Reflection.FieldDescriptorProto.Parser);
@@ -653,6 +709,7 @@ namespace Google.Protobuf.Reflection {
       get { return field_; }
     }
 
+    /// <summary>Field number for the "extension" field.</summary>
     public const int ExtensionFieldNumber = 6;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.FieldDescriptorProto> _repeated_extension_codec
         = pb::FieldCodec.ForMessage(50, global::Google.Protobuf.Reflection.FieldDescriptorProto.Parser);
@@ -661,6 +718,7 @@ namespace Google.Protobuf.Reflection {
       get { return extension_; }
     }
 
+    /// <summary>Field number for the "nested_type" field.</summary>
     public const int NestedTypeFieldNumber = 3;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.DescriptorProto> _repeated_nestedType_codec
         = pb::FieldCodec.ForMessage(26, global::Google.Protobuf.Reflection.DescriptorProto.Parser);
@@ -669,6 +727,7 @@ namespace Google.Protobuf.Reflection {
       get { return nestedType_; }
     }
 
+    /// <summary>Field number for the "enum_type" field.</summary>
     public const int EnumTypeFieldNumber = 4;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.EnumDescriptorProto> _repeated_enumType_codec
         = pb::FieldCodec.ForMessage(34, global::Google.Protobuf.Reflection.EnumDescriptorProto.Parser);
@@ -677,6 +736,7 @@ namespace Google.Protobuf.Reflection {
       get { return enumType_; }
     }
 
+    /// <summary>Field number for the "extension_range" field.</summary>
     public const int ExtensionRangeFieldNumber = 5;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.DescriptorProto.Types.ExtensionRange> _repeated_extensionRange_codec
         = pb::FieldCodec.ForMessage(42, global::Google.Protobuf.Reflection.DescriptorProto.Types.ExtensionRange.Parser);
@@ -685,6 +745,7 @@ namespace Google.Protobuf.Reflection {
       get { return extensionRange_; }
     }
 
+    /// <summary>Field number for the "oneof_decl" field.</summary>
     public const int OneofDeclFieldNumber = 8;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.OneofDescriptorProto> _repeated_oneofDecl_codec
         = pb::FieldCodec.ForMessage(66, global::Google.Protobuf.Reflection.OneofDescriptorProto.Parser);
@@ -693,6 +754,7 @@ namespace Google.Protobuf.Reflection {
       get { return oneofDecl_; }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 7;
     private global::Google.Protobuf.Reflection.MessageOptions options_;
     public global::Google.Protobuf.Reflection.MessageOptions Options {
@@ -702,6 +764,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "reserved_range" field.</summary>
     public const int ReservedRangeFieldNumber = 9;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.DescriptorProto.Types.ReservedRange> _repeated_reservedRange_codec
         = pb::FieldCodec.ForMessage(74, global::Google.Protobuf.Reflection.DescriptorProto.Types.ReservedRange.Parser);
@@ -710,10 +773,15 @@ namespace Google.Protobuf.Reflection {
       get { return reservedRange_; }
     }
 
+    /// <summary>Field number for the "reserved_name" field.</summary>
     public const int ReservedNameFieldNumber = 10;
     private static readonly pb::FieldCodec<string> _repeated_reservedName_codec
         = pb::FieldCodec.ForString(82);
     private readonly pbc::RepeatedField<string> reservedName_ = new pbc::RepeatedField<string>();
+    /// <summary>
+    ///  Reserved field names, which may not be used by fields in the same message.
+    ///  A given name may only be reserved once.
+    /// </summary>
     public pbc::RepeatedField<string> ReservedName {
       get { return reservedName_; }
     }
@@ -877,6 +945,7 @@ namespace Google.Protobuf.Reflection {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the DescriptorProto message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
       [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
@@ -907,6 +976,7 @@ namespace Google.Protobuf.Reflection {
           return new ExtensionRange(this);
         }
 
+        /// <summary>Field number for the "start" field.</summary>
         public const int StartFieldNumber = 1;
         private int start_;
         public int Start {
@@ -916,6 +986,7 @@ namespace Google.Protobuf.Reflection {
           }
         }
 
+        /// <summary>Field number for the "end" field.</summary>
         public const int EndFieldNumber = 2;
         private int end_;
         public int End {
@@ -1007,6 +1078,11 @@ namespace Google.Protobuf.Reflection {
 
       }
 
+      /// <summary>
+      ///  Range of reserved tag numbers. Reserved tag numbers may not be used by
+      ///  fields or extension ranges in the same message. Reserved ranges may
+      ///  not overlap.
+      /// </summary>
       [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
       internal sealed partial class ReservedRange : pb::IMessage<ReservedRange> {
         private static readonly pb::MessageParser<ReservedRange> _parser = new pb::MessageParser<ReservedRange>(() => new ReservedRange());
@@ -1035,8 +1111,12 @@ namespace Google.Protobuf.Reflection {
           return new ReservedRange(this);
         }
 
+        /// <summary>Field number for the "start" field.</summary>
         public const int StartFieldNumber = 1;
         private int start_;
+        /// <summary>
+        ///  Inclusive.
+        /// </summary>
         public int Start {
           get { return start_; }
           set {
@@ -1044,8 +1124,12 @@ namespace Google.Protobuf.Reflection {
           }
         }
 
+        /// <summary>Field number for the "end" field.</summary>
         public const int EndFieldNumber = 2;
         private int end_;
+        /// <summary>
+        ///  Exclusive.
+        /// </summary>
         public int End {
           get { return end_; }
           set {
@@ -1140,6 +1224,9 @@ namespace Google.Protobuf.Reflection {
 
   }
 
+  /// <summary>
+  ///  Describes a field within a message.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   internal sealed partial class FieldDescriptorProto : pb::IMessage<FieldDescriptorProto> {
     private static readonly pb::MessageParser<FieldDescriptorProto> _parser = new pb::MessageParser<FieldDescriptorProto>(() => new FieldDescriptorProto());
@@ -1175,6 +1262,7 @@ namespace Google.Protobuf.Reflection {
       return new FieldDescriptorProto(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
     public string Name {
@@ -1184,6 +1272,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "number" field.</summary>
     public const int NumberFieldNumber = 3;
     private int number_;
     public int Number {
@@ -1193,6 +1282,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "label" field.</summary>
     public const int LabelFieldNumber = 4;
     private global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Label label_ = global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Label.LABEL_OPTIONAL;
     public global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Label Label {
@@ -1202,8 +1292,13 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "type" field.</summary>
     public const int TypeFieldNumber = 5;
     private global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Type type_ = global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Type.TYPE_DOUBLE;
+    /// <summary>
+    ///  If type_name is set, this need not be set.  If both this and type_name
+    ///  are set, this must be one of TYPE_ENUM, TYPE_MESSAGE or TYPE_GROUP.
+    /// </summary>
     public global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Type Type {
       get { return type_; }
       set {
@@ -1211,8 +1306,16 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "type_name" field.</summary>
     public const int TypeNameFieldNumber = 6;
     private string typeName_ = "";
+    /// <summary>
+    ///  For message and enum types, this is the name of the type.  If the name
+    ///  starts with a '.', it is fully-qualified.  Otherwise, C++-like scoping
+    ///  rules are used to find the type (i.e. first the nested types within this
+    ///  message are searched, then within the parent, on up to the root
+    ///  namespace).
+    /// </summary>
     public string TypeName {
       get { return typeName_; }
       set {
@@ -1220,8 +1323,13 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "extendee" field.</summary>
     public const int ExtendeeFieldNumber = 2;
     private string extendee_ = "";
+    /// <summary>
+    ///  For extensions, this is the name of the type being extended.  It is
+    ///  resolved in the same manner as type_name.
+    /// </summary>
     public string Extendee {
       get { return extendee_; }
       set {
@@ -1229,8 +1337,16 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "default_value" field.</summary>
     public const int DefaultValueFieldNumber = 7;
     private string defaultValue_ = "";
+    /// <summary>
+    ///  For numeric types, contains the original text representation of the value.
+    ///  For booleans, "true" or "false".
+    ///  For strings, contains the default text contents (not escaped in any way).
+    ///  For bytes, contains the C escaped value.  All bytes >= 128 are escaped.
+    ///  TODO(kenton):  Base-64 encode?
+    /// </summary>
     public string DefaultValue {
       get { return defaultValue_; }
       set {
@@ -1238,8 +1354,13 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "oneof_index" field.</summary>
     public const int OneofIndexFieldNumber = 9;
     private int oneofIndex_;
+    /// <summary>
+    ///  If set, gives the index of a oneof in the containing type's oneof_decl
+    ///  list.  This field is a member of that oneof.
+    /// </summary>
     public int OneofIndex {
       get { return oneofIndex_; }
       set {
@@ -1247,6 +1368,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 8;
     private global::Google.Protobuf.Reflection.FieldOptions options_;
     public global::Google.Protobuf.Reflection.FieldOptions Options {
@@ -1455,32 +1577,66 @@ namespace Google.Protobuf.Reflection {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the FieldDescriptorProto message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
       internal enum Type {
+        /// <summary>
+        ///  0 is reserved for errors.
+        ///  Order is weird for historical reasons.
+        /// </summary>
         TYPE_DOUBLE = 1,
         TYPE_FLOAT = 2,
+        /// <summary>
+        ///  Not ZigZag encoded.  Negative numbers take 10 bytes.  Use TYPE_SINT64 if
+        ///  negative values are likely.
+        /// </summary>
         TYPE_INT64 = 3,
         TYPE_UINT64 = 4,
+        /// <summary>
+        ///  Not ZigZag encoded.  Negative numbers take 10 bytes.  Use TYPE_SINT32 if
+        ///  negative values are likely.
+        /// </summary>
         TYPE_INT32 = 5,
         TYPE_FIXED64 = 6,
         TYPE_FIXED32 = 7,
         TYPE_BOOL = 8,
         TYPE_STRING = 9,
+        /// <summary>
+        ///  Tag-delimited aggregate.
+        /// </summary>
         TYPE_GROUP = 10,
+        /// <summary>
+        ///  Length-delimited aggregate.
+        /// </summary>
         TYPE_MESSAGE = 11,
+        /// <summary>
+        ///  New in version 2.
+        /// </summary>
         TYPE_BYTES = 12,
         TYPE_UINT32 = 13,
         TYPE_ENUM = 14,
         TYPE_SFIXED32 = 15,
         TYPE_SFIXED64 = 16,
+        /// <summary>
+        ///  Uses ZigZag encoding.
+        /// </summary>
         TYPE_SINT32 = 17,
+        /// <summary>
+        ///  Uses ZigZag encoding.
+        /// </summary>
         TYPE_SINT64 = 18,
       }
 
       internal enum Label {
+        /// <summary>
+        ///  0 is reserved for errors
+        /// </summary>
         LABEL_OPTIONAL = 1,
         LABEL_REQUIRED = 2,
+        /// <summary>
+        ///  TODO(sanjay): Should we add LABEL_MAP?
+        /// </summary>
         LABEL_REPEATED = 3,
       }
 
@@ -1489,6 +1645,9 @@ namespace Google.Protobuf.Reflection {
 
   }
 
+  /// <summary>
+  ///  Describes a oneof.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   internal sealed partial class OneofDescriptorProto : pb::IMessage<OneofDescriptorProto> {
     private static readonly pb::MessageParser<OneofDescriptorProto> _parser = new pb::MessageParser<OneofDescriptorProto>(() => new OneofDescriptorProto());
@@ -1516,6 +1675,7 @@ namespace Google.Protobuf.Reflection {
       return new OneofDescriptorProto(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
     public string Name {
@@ -1591,6 +1751,9 @@ namespace Google.Protobuf.Reflection {
 
   }
 
+  /// <summary>
+  ///  Describes an enum type.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   internal sealed partial class EnumDescriptorProto : pb::IMessage<EnumDescriptorProto> {
     private static readonly pb::MessageParser<EnumDescriptorProto> _parser = new pb::MessageParser<EnumDescriptorProto>(() => new EnumDescriptorProto());
@@ -1620,6 +1783,7 @@ namespace Google.Protobuf.Reflection {
       return new EnumDescriptorProto(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
     public string Name {
@@ -1629,6 +1793,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 2;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.EnumValueDescriptorProto> _repeated_value_codec
         = pb::FieldCodec.ForMessage(18, global::Google.Protobuf.Reflection.EnumValueDescriptorProto.Parser);
@@ -1637,6 +1802,7 @@ namespace Google.Protobuf.Reflection {
       get { return value_; }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 3;
     private global::Google.Protobuf.Reflection.EnumOptions options_;
     public global::Google.Protobuf.Reflection.EnumOptions Options {
@@ -1743,6 +1909,9 @@ namespace Google.Protobuf.Reflection {
 
   }
 
+  /// <summary>
+  ///  Describes a value within an enum.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   internal sealed partial class EnumValueDescriptorProto : pb::IMessage<EnumValueDescriptorProto> {
     private static readonly pb::MessageParser<EnumValueDescriptorProto> _parser = new pb::MessageParser<EnumValueDescriptorProto>(() => new EnumValueDescriptorProto());
@@ -1772,6 +1941,7 @@ namespace Google.Protobuf.Reflection {
       return new EnumValueDescriptorProto(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
     public string Name {
@@ -1781,6 +1951,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "number" field.</summary>
     public const int NumberFieldNumber = 2;
     private int number_;
     public int Number {
@@ -1790,6 +1961,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 3;
     private global::Google.Protobuf.Reflection.EnumValueOptions options_;
     public global::Google.Protobuf.Reflection.EnumValueOptions Options {
@@ -1903,6 +2075,9 @@ namespace Google.Protobuf.Reflection {
 
   }
 
+  /// <summary>
+  ///  Describes a service.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   internal sealed partial class ServiceDescriptorProto : pb::IMessage<ServiceDescriptorProto> {
     private static readonly pb::MessageParser<ServiceDescriptorProto> _parser = new pb::MessageParser<ServiceDescriptorProto>(() => new ServiceDescriptorProto());
@@ -1932,6 +2107,7 @@ namespace Google.Protobuf.Reflection {
       return new ServiceDescriptorProto(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
     public string Name {
@@ -1941,6 +2117,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "method" field.</summary>
     public const int MethodFieldNumber = 2;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.MethodDescriptorProto> _repeated_method_codec
         = pb::FieldCodec.ForMessage(18, global::Google.Protobuf.Reflection.MethodDescriptorProto.Parser);
@@ -1949,6 +2126,7 @@ namespace Google.Protobuf.Reflection {
       get { return method_; }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 3;
     private global::Google.Protobuf.Reflection.ServiceOptions options_;
     public global::Google.Protobuf.Reflection.ServiceOptions Options {
@@ -2055,6 +2233,9 @@ namespace Google.Protobuf.Reflection {
 
   }
 
+  /// <summary>
+  ///  Describes a method of a service.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   internal sealed partial class MethodDescriptorProto : pb::IMessage<MethodDescriptorProto> {
     private static readonly pb::MessageParser<MethodDescriptorProto> _parser = new pb::MessageParser<MethodDescriptorProto>(() => new MethodDescriptorProto());
@@ -2087,6 +2268,7 @@ namespace Google.Protobuf.Reflection {
       return new MethodDescriptorProto(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
     public string Name {
@@ -2096,8 +2278,13 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "input_type" field.</summary>
     public const int InputTypeFieldNumber = 2;
     private string inputType_ = "";
+    /// <summary>
+    ///  Input and output type names.  These are resolved in the same way as
+    ///  FieldDescriptorProto.type_name, but must refer to a message type.
+    /// </summary>
     public string InputType {
       get { return inputType_; }
       set {
@@ -2105,6 +2292,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "output_type" field.</summary>
     public const int OutputTypeFieldNumber = 3;
     private string outputType_ = "";
     public string OutputType {
@@ -2114,6 +2302,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 4;
     private global::Google.Protobuf.Reflection.MethodOptions options_;
     public global::Google.Protobuf.Reflection.MethodOptions Options {
@@ -2123,8 +2312,12 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "client_streaming" field.</summary>
     public const int ClientStreamingFieldNumber = 5;
     private bool clientStreaming_;
+    /// <summary>
+    ///  Identifies if client streams multiple client messages
+    /// </summary>
     public bool ClientStreaming {
       get { return clientStreaming_; }
       set {
@@ -2132,8 +2325,12 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "server_streaming" field.</summary>
     public const int ServerStreamingFieldNumber = 6;
     private bool serverStreaming_;
+    /// <summary>
+    ///  Identifies if server streams multiple server messages
+    /// </summary>
     public bool ServerStreaming {
       get { return serverStreaming_; }
       set {
@@ -2335,8 +2532,15 @@ namespace Google.Protobuf.Reflection {
       return new FileOptions(this);
     }
 
+    /// <summary>Field number for the "java_package" field.</summary>
     public const int JavaPackageFieldNumber = 1;
     private string javaPackage_ = "";
+    /// <summary>
+    ///  Sets the Java package where classes generated from this .proto will be
+    ///  placed.  By default, the proto package is used, but this is often
+    ///  inappropriate because proto packages do not normally start with backwards
+    ///  domain names.
+    /// </summary>
     public string JavaPackage {
       get { return javaPackage_; }
       set {
@@ -2344,8 +2548,16 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "java_outer_classname" field.</summary>
     public const int JavaOuterClassnameFieldNumber = 8;
     private string javaOuterClassname_ = "";
+    /// <summary>
+    ///  If set, all the classes from the .proto file are wrapped in a single
+    ///  outer class with the given name.  This applies to both Proto1
+    ///  (equivalent to the old "--one_java_file" option) and Proto2 (where
+    ///  a .proto always translates to a single class, but you may want to
+    ///  explicitly choose the class name).
+    /// </summary>
     public string JavaOuterClassname {
       get { return javaOuterClassname_; }
       set {
@@ -2353,8 +2565,17 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "java_multiple_files" field.</summary>
     public const int JavaMultipleFilesFieldNumber = 10;
     private bool javaMultipleFiles_;
+    /// <summary>
+    ///  If set true, then the Java code generator will generate a separate .java
+    ///  file for each top-level message, enum, and service defined in the .proto
+    ///  file.  Thus, these types will *not* be nested inside the outer class
+    ///  named by java_outer_classname.  However, the outer class will still be
+    ///  generated to contain the file's getDescriptor() method as well as any
+    ///  top-level extensions defined in the file.
+    /// </summary>
     public bool JavaMultipleFiles {
       get { return javaMultipleFiles_; }
       set {
@@ -2362,8 +2583,23 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "java_generate_equals_and_hash" field.</summary>
     public const int JavaGenerateEqualsAndHashFieldNumber = 20;
     private bool javaGenerateEqualsAndHash_;
+    /// <summary>
+    ///  If set true, then the Java code generator will generate equals() and
+    ///  hashCode() methods for all messages defined in the .proto file.
+    ///  This increases generated code size, potentially substantially for large
+    ///  protos, which may harm a memory-constrained application.
+    ///  - In the full runtime this is a speed optimization, as the
+    ///  AbstractMessage base class includes reflection-based implementations of
+    ///  these methods.
+    ///  - In the lite runtime, setting this option changes the semantics of
+    ///  equals() and hashCode() to more closely match those of the full runtime;
+    ///  the generated methods compute their results based on field values rather
+    ///  than object identity. (Implementations should not assume that hashcodes
+    ///  will be consistent across runtimes or versions of the protocol compiler.)
+    /// </summary>
     public bool JavaGenerateEqualsAndHash {
       get { return javaGenerateEqualsAndHash_; }
       set {
@@ -2371,8 +2607,17 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "java_string_check_utf8" field.</summary>
     public const int JavaStringCheckUtf8FieldNumber = 27;
     private bool javaStringCheckUtf8_;
+    /// <summary>
+    ///  If set true, then the Java2 code generator will generate code that
+    ///  throws an exception whenever an attempt is made to assign a non-UTF-8
+    ///  byte sequence to a string field.
+    ///  Message reflection will do the same.
+    ///  However, an extension field still accepts non-UTF-8 byte sequences.
+    ///  This option has no effect on when used with the lite runtime.
+    /// </summary>
     public bool JavaStringCheckUtf8 {
       get { return javaStringCheckUtf8_; }
       set {
@@ -2380,6 +2625,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "optimize_for" field.</summary>
     public const int OptimizeForFieldNumber = 9;
     private global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode optimizeFor_ = global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode.SPEED;
     public global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode OptimizeFor {
@@ -2389,8 +2635,16 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "go_package" field.</summary>
     public const int GoPackageFieldNumber = 11;
     private string goPackage_ = "";
+    /// <summary>
+    ///  Sets the Go package where structs generated from this .proto will be
+    ///  placed. If omitted, the Go package will be derived from the following:
+    ///    - The basename of the package import path, if provided.
+    ///    - Otherwise, the package statement in the .proto file, if present.
+    ///    - Otherwise, the basename of the .proto file, without extension.
+    /// </summary>
     public string GoPackage {
       get { return goPackage_; }
       set {
@@ -2398,8 +2652,20 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "cc_generic_services" field.</summary>
     public const int CcGenericServicesFieldNumber = 16;
     private bool ccGenericServices_;
+    /// <summary>
+    ///  Should generic services be generated in each language?  "Generic" services
+    ///  are not specific to any particular RPC system.  They are generated by the
+    ///  main code generators in each language (without additional plugins).
+    ///  Generic services were the only kind of service generation supported by
+    ///  early versions of google.protobuf.
+    ///  Generic services are now considered deprecated in favor of using plugins
+    ///  that generate code specific to your particular RPC system.  Therefore,
+    ///  these default to false.  Old code which depends on generic services should
+    ///  explicitly set them to true.
+    /// </summary>
     public bool CcGenericServices {
       get { return ccGenericServices_; }
       set {
@@ -2407,6 +2673,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "java_generic_services" field.</summary>
     public const int JavaGenericServicesFieldNumber = 17;
     private bool javaGenericServices_;
     public bool JavaGenericServices {
@@ -2416,6 +2683,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "py_generic_services" field.</summary>
     public const int PyGenericServicesFieldNumber = 18;
     private bool pyGenericServices_;
     public bool PyGenericServices {
@@ -2425,8 +2693,15 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "deprecated" field.</summary>
     public const int DeprecatedFieldNumber = 23;
     private bool deprecated_;
+    /// <summary>
+    ///  Is this file deprecated?
+    ///  Depending on the target platform, this can emit Deprecated annotations
+    ///  for everything in the file, or it will be completely ignored; in the very
+    ///  least, this is a formalization for deprecating files.
+    /// </summary>
     public bool Deprecated {
       get { return deprecated_; }
       set {
@@ -2434,8 +2709,13 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "cc_enable_arenas" field.</summary>
     public const int CcEnableArenasFieldNumber = 31;
     private bool ccEnableArenas_;
+    /// <summary>
+    ///  Enables the use of arenas for the proto messages in this file. This applies
+    ///  only to generated classes for C++.
+    /// </summary>
     public bool CcEnableArenas {
       get { return ccEnableArenas_; }
       set {
@@ -2443,8 +2723,13 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "objc_class_prefix" field.</summary>
     public const int ObjcClassPrefixFieldNumber = 36;
     private string objcClassPrefix_ = "";
+    /// <summary>
+    ///  Sets the objective c class prefix which is prepended to all objective c
+    ///  generated classes from this .proto. There is no default.
+    /// </summary>
     public string ObjcClassPrefix {
       get { return objcClassPrefix_; }
       set {
@@ -2452,8 +2737,12 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "csharp_namespace" field.</summary>
     public const int CsharpNamespaceFieldNumber = 37;
     private string csharpNamespace_ = "";
+    /// <summary>
+    ///  Namespace for generated classes; defaults to the package.
+    /// </summary>
     public string CsharpNamespace {
       get { return csharpNamespace_; }
       set {
@@ -2461,8 +2750,13 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "javanano_use_deprecated_package" field.</summary>
     public const int JavananoUseDeprecatedPackageFieldNumber = 38;
     private bool javananoUseDeprecatedPackage_;
+    /// <summary>
+    ///  Whether the nano proto compiler should generate in the deprecated non-nano
+    ///  suffixed package.
+    /// </summary>
     public bool JavananoUseDeprecatedPackage {
       get { return javananoUseDeprecatedPackage_; }
       set {
@@ -2470,10 +2764,14 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "uninterpreted_option" field.</summary>
     public const int UninterpretedOptionFieldNumber = 999;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
         = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    /// <summary>
+    ///  The parser stores options it doesn't recognize here. See above.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
       get { return uninterpretedOption_; }
     }
@@ -2776,11 +3074,24 @@ namespace Google.Protobuf.Reflection {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the FileOptions message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
+      /// <summary>
+      ///  Generated classes can be optimized for speed or code size.
+      /// </summary>
       internal enum OptimizeMode {
+        /// <summary>
+        ///  Generate complete code for parsing, serialization,
+        /// </summary>
         SPEED = 1,
+        /// <summary>
+        ///  etc.
+        /// </summary>
         CODE_SIZE = 2,
+        /// <summary>
+        ///  Generate code using MessageLite and the lite runtime.
+        /// </summary>
         LITE_RUNTIME = 3,
       }
 
@@ -2820,8 +3131,26 @@ namespace Google.Protobuf.Reflection {
       return new MessageOptions(this);
     }
 
+    /// <summary>Field number for the "message_set_wire_format" field.</summary>
     public const int MessageSetWireFormatFieldNumber = 1;
     private bool messageSetWireFormat_;
+    /// <summary>
+    ///  Set true to use the old proto1 MessageSet wire format for extensions.
+    ///  This is provided for backwards-compatibility with the MessageSet wire
+    ///  format.  You should not use this for any other reason:  It's less
+    ///  efficient, has fewer features, and is more complicated.
+    ///  The message must be defined exactly as follows:
+    ///    message Foo {
+    ///      option message_set_wire_format = true;
+    ///      extensions 4 to max;
+    ///    }
+    ///  Note that the message cannot have any defined fields; MessageSets only
+    ///  have extensions.
+    ///  All extensions of your type must be singular messages; e.g. they cannot
+    ///  be int32s, enums, or repeated messages.
+    ///  Because this is an option, the above two restrictions are not enforced by
+    ///  the protocol compiler.
+    /// </summary>
     public bool MessageSetWireFormat {
       get { return messageSetWireFormat_; }
       set {
@@ -2829,8 +3158,14 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "no_standard_descriptor_accessor" field.</summary>
     public const int NoStandardDescriptorAccessorFieldNumber = 2;
     private bool noStandardDescriptorAccessor_;
+    /// <summary>
+    ///  Disables the generation of the standard "descriptor()" accessor, which can
+    ///  conflict with a field of the same name.  This is meant to make migration
+    ///  from proto1 easier; new code should avoid fields named "descriptor".
+    /// </summary>
     public bool NoStandardDescriptorAccessor {
       get { return noStandardDescriptorAccessor_; }
       set {
@@ -2838,8 +3173,15 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "deprecated" field.</summary>
     public const int DeprecatedFieldNumber = 3;
     private bool deprecated_;
+    /// <summary>
+    ///  Is this message deprecated?
+    ///  Depending on the target platform, this can emit Deprecated annotations
+    ///  for the message, or it will be completely ignored; in the very least,
+    ///  this is a formalization for deprecating messages.
+    /// </summary>
     public bool Deprecated {
       get { return deprecated_; }
       set {
@@ -2847,8 +3189,29 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "map_entry" field.</summary>
     public const int MapEntryFieldNumber = 7;
     private bool mapEntry_;
+    /// <summary>
+    ///  Whether the message is an automatically generated map entry type for the
+    ///  maps field.
+    ///  For maps fields:
+    ///      map&lt;KeyType, ValueType> map_field = 1;
+    ///  The parsed descriptor looks like:
+    ///      message MapFieldEntry {
+    ///          option map_entry = true;
+    ///          optional KeyType key = 1;
+    ///          optional ValueType value = 2;
+    ///      }
+    ///      repeated MapFieldEntry map_field = 1;
+    ///  Implementations may choose not to generate the map_entry=true message, but
+    ///  use a native map in the target language to hold the keys and values.
+    ///  The reflection APIs in such implementions still need to work as
+    ///  if the field is a repeated message field.
+    ///  NOTE: Do not set the option in .proto files. Always use the maps syntax
+    ///  instead. The option should only be implicitly set by the proto compiler
+    ///  parser.
+    /// </summary>
     public bool MapEntry {
       get { return mapEntry_; }
       set {
@@ -2856,10 +3219,14 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "uninterpreted_option" field.</summary>
     public const int UninterpretedOptionFieldNumber = 999;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
         = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    /// <summary>
+    ///  The parser stores options it doesn't recognize here. See above.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
       get { return uninterpretedOption_; }
     }
@@ -3020,8 +3387,15 @@ namespace Google.Protobuf.Reflection {
       return new FieldOptions(this);
     }
 
+    /// <summary>Field number for the "ctype" field.</summary>
     public const int CtypeFieldNumber = 1;
     private global::Google.Protobuf.Reflection.FieldOptions.Types.CType ctype_ = global::Google.Protobuf.Reflection.FieldOptions.Types.CType.STRING;
+    /// <summary>
+    ///  The ctype option instructs the C++ code generator to use a different
+    ///  representation of the field than it normally would.  See the specific
+    ///  options below.  This option is not yet implemented in the open source
+    ///  release -- sorry, we'll try to include it in a future version!
+    /// </summary>
     public global::Google.Protobuf.Reflection.FieldOptions.Types.CType Ctype {
       get { return ctype_; }
       set {
@@ -3029,8 +3403,16 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "packed" field.</summary>
     public const int PackedFieldNumber = 2;
     private bool packed_;
+    /// <summary>
+    ///  The packed option can be enabled for repeated primitive fields to enable
+    ///  a more efficient representation on the wire. Rather than repeatedly
+    ///  writing the tag and type for each element, the entire array is encoded as
+    ///  a single length-delimited blob. In proto3, only explicit setting it to
+    ///  false will avoid using packed encoding.
+    /// </summary>
     public bool Packed {
       get { return packed_; }
       set {
@@ -3038,8 +3420,20 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "jstype" field.</summary>
     public const int JstypeFieldNumber = 6;
     private global::Google.Protobuf.Reflection.FieldOptions.Types.JSType jstype_ = global::Google.Protobuf.Reflection.FieldOptions.Types.JSType.JS_NORMAL;
+    /// <summary>
+    ///  The jstype option determines the JavaScript type used for values of the
+    ///  field.  The option is permitted only for 64 bit integral and fixed types
+    ///  (int64, uint64, sint64, fixed64, sfixed64).  By default these types are
+    ///  represented as JavaScript strings.  This avoids loss of precision that can
+    ///  happen when a large value is converted to a floating point JavaScript
+    ///  numbers.  Specifying JS_NUMBER for the jstype causes the generated
+    ///  JavaScript code to use the JavaScript "number" type instead of strings.
+    ///  This option is an enum to permit additional types to be added,
+    ///  e.g. goog.math.Integer.
+    /// </summary>
     public global::Google.Protobuf.Reflection.FieldOptions.Types.JSType Jstype {
       get { return jstype_; }
       set {
@@ -3047,8 +3441,35 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "lazy" field.</summary>
     public const int LazyFieldNumber = 5;
     private bool lazy_;
+    /// <summary>
+    ///  Should this field be parsed lazily?  Lazy applies only to message-type
+    ///  fields.  It means that when the outer message is initially parsed, the
+    ///  inner message's contents will not be parsed but instead stored in encoded
+    ///  form.  The inner message will actually be parsed when it is first accessed.
+    ///  This is only a hint.  Implementations are free to choose whether to use
+    ///  eager or lazy parsing regardless of the value of this option.  However,
+    ///  setting this option true suggests that the protocol author believes that
+    ///  using lazy parsing on this field is worth the additional bookkeeping
+    ///  overhead typically needed to implement it.
+    ///  This option does not affect the public interface of any generated code;
+    ///  all method signatures remain the same.  Furthermore, thread-safety of the
+    ///  interface is not affected by this option; const methods remain safe to
+    ///  call from multiple threads concurrently, while non-const methods continue
+    ///  to require exclusive access.
+    ///  Note that implementations may choose not to check required fields within
+    ///  a lazy sub-message.  That is, calling IsInitialized() on the outher message
+    ///  may return true even if the inner message has missing required fields.
+    ///  This is necessary because otherwise the inner message would have to be
+    ///  parsed in order to perform the check, defeating the purpose of lazy
+    ///  parsing.  An implementation which chooses not to check required fields
+    ///  must be consistent about it.  That is, for any particular sub-message, the
+    ///  implementation must either *always* check its required fields, or *never*
+    ///  check its required fields, regardless of whether or not the message has
+    ///  been parsed.
+    /// </summary>
     public bool Lazy {
       get { return lazy_; }
       set {
@@ -3056,8 +3477,15 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "deprecated" field.</summary>
     public const int DeprecatedFieldNumber = 3;
     private bool deprecated_;
+    /// <summary>
+    ///  Is this field deprecated?
+    ///  Depending on the target platform, this can emit Deprecated annotations
+    ///  for accessors, or it will be completely ignored; in the very least, this
+    ///  is a formalization for deprecating fields.
+    /// </summary>
     public bool Deprecated {
       get { return deprecated_; }
       set {
@@ -3065,8 +3493,12 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "weak" field.</summary>
     public const int WeakFieldNumber = 10;
     private bool weak_;
+    /// <summary>
+    ///  For Google-internal migration only. Do not use.
+    /// </summary>
     public bool Weak {
       get { return weak_; }
       set {
@@ -3074,10 +3506,14 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "uninterpreted_option" field.</summary>
     public const int UninterpretedOptionFieldNumber = 999;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
         = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    /// <summary>
+    ///  The parser stores options it doesn't recognize here. See above.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
       get { return uninterpretedOption_; }
     }
@@ -3236,17 +3672,30 @@ namespace Google.Protobuf.Reflection {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the FieldOptions message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
       internal enum CType {
+        /// <summary>
+        ///  Default mode.
+        /// </summary>
         STRING = 0,
         CORD = 1,
         STRING_PIECE = 2,
       }
 
       internal enum JSType {
+        /// <summary>
+        ///  Use the default type.
+        /// </summary>
         JS_NORMAL = 0,
+        /// <summary>
+        ///  Use JavaScript strings.
+        /// </summary>
         JS_STRING = 1,
+        /// <summary>
+        ///  Use JavaScript numbers.
+        /// </summary>
         JS_NUMBER = 2,
       }
 
@@ -3284,8 +3733,13 @@ namespace Google.Protobuf.Reflection {
       return new EnumOptions(this);
     }
 
+    /// <summary>Field number for the "allow_alias" field.</summary>
     public const int AllowAliasFieldNumber = 2;
     private bool allowAlias_;
+    /// <summary>
+    ///  Set this option to true to allow mapping different tag names to the same
+    ///  value.
+    /// </summary>
     public bool AllowAlias {
       get { return allowAlias_; }
       set {
@@ -3293,8 +3747,15 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "deprecated" field.</summary>
     public const int DeprecatedFieldNumber = 3;
     private bool deprecated_;
+    /// <summary>
+    ///  Is this enum deprecated?
+    ///  Depending on the target platform, this can emit Deprecated annotations
+    ///  for the enum, or it will be completely ignored; in the very least, this
+    ///  is a formalization for deprecating enums.
+    /// </summary>
     public bool Deprecated {
       get { return deprecated_; }
       set {
@@ -3302,10 +3763,14 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "uninterpreted_option" field.</summary>
     public const int UninterpretedOptionFieldNumber = 999;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
         = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    /// <summary>
+    ///  The parser stores options it doesn't recognize here. See above.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
       get { return uninterpretedOption_; }
     }
@@ -3429,8 +3894,15 @@ namespace Google.Protobuf.Reflection {
       return new EnumValueOptions(this);
     }
 
+    /// <summary>Field number for the "deprecated" field.</summary>
     public const int DeprecatedFieldNumber = 1;
     private bool deprecated_;
+    /// <summary>
+    ///  Is this enum value deprecated?
+    ///  Depending on the target platform, this can emit Deprecated annotations
+    ///  for the enum value, or it will be completely ignored; in the very least,
+    ///  this is a formalization for deprecating enum values.
+    /// </summary>
     public bool Deprecated {
       get { return deprecated_; }
       set {
@@ -3438,10 +3910,14 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "uninterpreted_option" field.</summary>
     public const int UninterpretedOptionFieldNumber = 999;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
         = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    /// <summary>
+    ///  The parser stores options it doesn't recognize here. See above.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
       get { return uninterpretedOption_; }
     }
@@ -3549,8 +4025,15 @@ namespace Google.Protobuf.Reflection {
       return new ServiceOptions(this);
     }
 
+    /// <summary>Field number for the "deprecated" field.</summary>
     public const int DeprecatedFieldNumber = 33;
     private bool deprecated_;
+    /// <summary>
+    ///  Is this service deprecated?
+    ///  Depending on the target platform, this can emit Deprecated annotations
+    ///  for the service, or it will be completely ignored; in the very least,
+    ///  this is a formalization for deprecating services.
+    /// </summary>
     public bool Deprecated {
       get { return deprecated_; }
       set {
@@ -3558,10 +4041,14 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "uninterpreted_option" field.</summary>
     public const int UninterpretedOptionFieldNumber = 999;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
         = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    /// <summary>
+    ///  The parser stores options it doesn't recognize here. See above.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
       get { return uninterpretedOption_; }
     }
@@ -3669,8 +4156,15 @@ namespace Google.Protobuf.Reflection {
       return new MethodOptions(this);
     }
 
+    /// <summary>Field number for the "deprecated" field.</summary>
     public const int DeprecatedFieldNumber = 33;
     private bool deprecated_;
+    /// <summary>
+    ///  Is this method deprecated?
+    ///  Depending on the target platform, this can emit Deprecated annotations
+    ///  for the method, or it will be completely ignored; in the very least,
+    ///  this is a formalization for deprecating methods.
+    /// </summary>
     public bool Deprecated {
       get { return deprecated_; }
       set {
@@ -3678,10 +4172,14 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "uninterpreted_option" field.</summary>
     public const int UninterpretedOptionFieldNumber = 999;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
         = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    /// <summary>
+    ///  The parser stores options it doesn't recognize here. See above.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
       get { return uninterpretedOption_; }
     }
@@ -3761,6 +4259,14 @@ namespace Google.Protobuf.Reflection {
 
   }
 
+  /// <summary>
+  ///  A message representing a option the parser does not recognize. This only
+  ///  appears in options protos created by the compiler::Parser class.
+  ///  DescriptorPool resolves these when building Descriptor objects. Therefore,
+  ///  options protos in descriptor objects (e.g. returned by Descriptor::options(),
+  ///  or produced by Descriptor::CopyTo()) will never have UninterpretedOptions
+  ///  in them.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   internal sealed partial class UninterpretedOption : pb::IMessage<UninterpretedOption> {
     private static readonly pb::MessageParser<UninterpretedOption> _parser = new pb::MessageParser<UninterpretedOption>(() => new UninterpretedOption());
@@ -3794,6 +4300,7 @@ namespace Google.Protobuf.Reflection {
       return new UninterpretedOption(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 2;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption.Types.NamePart> _repeated_name_codec
         = pb::FieldCodec.ForMessage(18, global::Google.Protobuf.Reflection.UninterpretedOption.Types.NamePart.Parser);
@@ -3802,8 +4309,13 @@ namespace Google.Protobuf.Reflection {
       get { return name_; }
     }
 
+    /// <summary>Field number for the "identifier_value" field.</summary>
     public const int IdentifierValueFieldNumber = 3;
     private string identifierValue_ = "";
+    /// <summary>
+    ///  The value of the uninterpreted option, in whatever type the tokenizer
+    ///  identified it as during parsing. Exactly one of these should be set.
+    /// </summary>
     public string IdentifierValue {
       get { return identifierValue_; }
       set {
@@ -3811,6 +4323,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "positive_int_value" field.</summary>
     public const int PositiveIntValueFieldNumber = 4;
     private ulong positiveIntValue_;
     public ulong PositiveIntValue {
@@ -3820,6 +4333,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "negative_int_value" field.</summary>
     public const int NegativeIntValueFieldNumber = 5;
     private long negativeIntValue_;
     public long NegativeIntValue {
@@ -3829,6 +4343,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "double_value" field.</summary>
     public const int DoubleValueFieldNumber = 6;
     private double doubleValue_;
     public double DoubleValue {
@@ -3838,6 +4353,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "string_value" field.</summary>
     public const int StringValueFieldNumber = 7;
     private pb::ByteString stringValue_ = pb::ByteString.Empty;
     public pb::ByteString StringValue {
@@ -3847,6 +4363,7 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "aggregate_value" field.</summary>
     public const int AggregateValueFieldNumber = 8;
     private string aggregateValue_ = "";
     public string AggregateValue {
@@ -4010,8 +4527,16 @@ namespace Google.Protobuf.Reflection {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the UninterpretedOption message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
+      /// <summary>
+      ///  The name of the uninterpreted option.  Each string represents a segment in
+      ///  a dot-separated name.  is_extension is true iff a segment represents an
+      ///  extension (denoted with parentheses in options specs in .proto files).
+      ///  E.g.,{ ["foo", false], ["bar.baz", true], ["qux", false] } represents
+      ///  "foo.(bar.baz).qux".
+      /// </summary>
       [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
       internal sealed partial class NamePart : pb::IMessage<NamePart> {
         private static readonly pb::MessageParser<NamePart> _parser = new pb::MessageParser<NamePart>(() => new NamePart());
@@ -4040,6 +4565,7 @@ namespace Google.Protobuf.Reflection {
           return new NamePart(this);
         }
 
+        /// <summary>Field number for the "name_part" field.</summary>
         public const int NamePart_FieldNumber = 1;
         private string namePart_ = "";
         public string NamePart_ {
@@ -4049,6 +4575,7 @@ namespace Google.Protobuf.Reflection {
           }
         }
 
+        /// <summary>Field number for the "is_extension" field.</summary>
         public const int IsExtensionFieldNumber = 2;
         private bool isExtension_;
         public bool IsExtension {
@@ -4145,6 +4672,10 @@ namespace Google.Protobuf.Reflection {
 
   }
 
+  /// <summary>
+  ///  Encapsulates information about the original source file from which a
+  ///  FileDescriptorProto was generated.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   internal sealed partial class SourceCodeInfo : pb::IMessage<SourceCodeInfo> {
     private static readonly pb::MessageParser<SourceCodeInfo> _parser = new pb::MessageParser<SourceCodeInfo>(() => new SourceCodeInfo());
@@ -4172,10 +4703,54 @@ namespace Google.Protobuf.Reflection {
       return new SourceCodeInfo(this);
     }
 
+    /// <summary>Field number for the "location" field.</summary>
     public const int LocationFieldNumber = 1;
     private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.SourceCodeInfo.Types.Location> _repeated_location_codec
         = pb::FieldCodec.ForMessage(10, global::Google.Protobuf.Reflection.SourceCodeInfo.Types.Location.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.SourceCodeInfo.Types.Location> location_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.SourceCodeInfo.Types.Location>();
+    /// <summary>
+    ///  A Location identifies a piece of source code in a .proto file which
+    ///  corresponds to a particular definition.  This information is intended
+    ///  to be useful to IDEs, code indexers, documentation generators, and similar
+    ///  tools.
+    ///  For example, say we have a file like:
+    ///    message Foo {
+    ///      optional string foo = 1;
+    ///    }
+    ///  Let's look at just the field definition:
+    ///    optional string foo = 1;
+    ///    ^       ^^     ^^  ^  ^^^
+    ///    a       bc     de  f  ghi
+    ///  We have the following locations:
+    ///    span   path               represents
+    ///    [a,i)  [ 4, 0, 2, 0 ]     The whole field definition.
+    ///    [a,b)  [ 4, 0, 2, 0, 4 ]  The label (optional).
+    ///    [c,d)  [ 4, 0, 2, 0, 5 ]  The type (string).
+    ///    [e,f)  [ 4, 0, 2, 0, 1 ]  The name (foo).
+    ///    [g,h)  [ 4, 0, 2, 0, 3 ]  The number (1).
+    ///  Notes:
+    ///  - A location may refer to a repeated field itself (i.e. not to any
+    ///    particular index within it).  This is used whenever a set of elements are
+    ///    logically enclosed in a single code segment.  For example, an entire
+    ///    extend block (possibly containing multiple extension definitions) will
+    ///    have an outer location whose path refers to the "extensions" repeated
+    ///    field without an index.
+    ///  - Multiple locations may have the same path.  This happens when a single
+    ///    logical declaration is spread out across multiple places.  The most
+    ///    obvious example is the "extend" block again -- there may be multiple
+    ///    extend blocks in the same scope, each of which will have the same path.
+    ///  - A location's span is not always a subset of its parent's span.  For
+    ///    example, the "extendee" of an extension declaration appears at the
+    ///    beginning of the "extend" block and is shared by all extensions within
+    ///    the block.
+    ///  - Just because a location's span is a subset of some other location's span
+    ///    does not mean that it is a descendent.  For example, a "group" defines
+    ///    both a type and a field in a single declaration.  Thus, the locations
+    ///    corresponding to the type and field and their components will overlap.
+    ///  - Code which tries to interpret locations should probably be designed to
+    ///    ignore those that it doesn't understand, as more types of locations could
+    ///    be recorded in the future.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.Reflection.SourceCodeInfo.Types.Location> Location {
       get { return location_; }
     }
@@ -4238,6 +4813,7 @@ namespace Google.Protobuf.Reflection {
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the SourceCodeInfo message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
       [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
@@ -4271,24 +4847,95 @@ namespace Google.Protobuf.Reflection {
           return new Location(this);
         }
 
+        /// <summary>Field number for the "path" field.</summary>
         public const int PathFieldNumber = 1;
         private static readonly pb::FieldCodec<int> _repeated_path_codec
             = pb::FieldCodec.ForInt32(10);
         private readonly pbc::RepeatedField<int> path_ = new pbc::RepeatedField<int>();
+        /// <summary>
+        ///  Identifies which part of the FileDescriptorProto was defined at this
+        ///  location.
+        ///  Each element is a field number or an index.  They form a path from
+        ///  the root FileDescriptorProto to the place where the definition.  For
+        ///  example, this path:
+        ///    [ 4, 3, 2, 7, 1 ]
+        ///  refers to:
+        ///    file.message_type(3)  // 4, 3
+        ///        .field(7)         // 2, 7
+        ///        .name()           // 1
+        ///  This is because FileDescriptorProto.message_type has field number 4:
+        ///    repeated DescriptorProto message_type = 4;
+        ///  and DescriptorProto.field has field number 2:
+        ///    repeated FieldDescriptorProto field = 2;
+        ///  and FieldDescriptorProto.name has field number 1:
+        ///    optional string name = 1;
+        ///  Thus, the above path gives the location of a field name.  If we removed
+        ///  the last element:
+        ///    [ 4, 3, 2, 7 ]
+        ///  this path refers to the whole field declaration (from the beginning
+        ///  of the label to the terminating semicolon).
+        /// </summary>
         public pbc::RepeatedField<int> Path {
           get { return path_; }
         }
 
+        /// <summary>Field number for the "span" field.</summary>
         public const int SpanFieldNumber = 2;
         private static readonly pb::FieldCodec<int> _repeated_span_codec
             = pb::FieldCodec.ForInt32(18);
         private readonly pbc::RepeatedField<int> span_ = new pbc::RepeatedField<int>();
+        /// <summary>
+        ///  Always has exactly three or four elements: start line, start column,
+        ///  end line (optional, otherwise assumed same as start line), end column.
+        ///  These are packed into a single field for efficiency.  Note that line
+        ///  and column numbers are zero-based -- typically you will want to add
+        ///  1 to each before displaying to a user.
+        /// </summary>
         public pbc::RepeatedField<int> Span {
           get { return span_; }
         }
 
+        /// <summary>Field number for the "leading_comments" field.</summary>
         public const int LeadingCommentsFieldNumber = 3;
         private string leadingComments_ = "";
+        /// <summary>
+        ///  If this SourceCodeInfo represents a complete declaration, these are any
+        ///  comments appearing before and after the declaration which appear to be
+        ///  attached to the declaration.
+        ///  A series of line comments appearing on consecutive lines, with no other
+        ///  tokens appearing on those lines, will be treated as a single comment.
+        ///  leading_detached_comments will keep paragraphs of comments that appear
+        ///  before (but not connected to) the current element. Each paragraph,
+        ///  separated by empty lines, will be one comment element in the repeated
+        ///  field.
+        ///  Only the comment content is provided; comment markers (e.g. //) are
+        ///  stripped out.  For block comments, leading whitespace and an asterisk
+        ///  will be stripped from the beginning of each line other than the first.
+        ///  Newlines are included in the output.
+        ///  Examples:
+        ///    optional int32 foo = 1;  // Comment attached to foo.
+        ///    // Comment attached to bar.
+        ///    optional int32 bar = 2;
+        ///    optional string baz = 3;
+        ///    // Comment attached to baz.
+        ///    // Another line attached to baz.
+        ///    // Comment attached to qux.
+        ///    //
+        ///    // Another line attached to qux.
+        ///    optional double qux = 4;
+        ///    // Detached comment for corge. This is not leading or trailing comments
+        ///    // to qux or corge because there are blank lines separating it from
+        ///    // both.
+        ///    // Detached comment for corge paragraph 2.
+        ///    optional string corge = 5;
+        ///    /* Block comment attached
+        ///     * to corge.  Leading asterisks
+        ///     * will be removed. */
+        ///    /* Block comment attached to
+        ///     * grault. */
+        ///    optional int32 grault = 6;
+        ///    // ignored detached comments.
+        /// </summary>
         public string LeadingComments {
           get { return leadingComments_; }
           set {
@@ -4296,6 +4943,7 @@ namespace Google.Protobuf.Reflection {
           }
         }
 
+        /// <summary>Field number for the "trailing_comments" field.</summary>
         public const int TrailingCommentsFieldNumber = 4;
         private string trailingComments_ = "";
         public string TrailingComments {
@@ -4305,6 +4953,7 @@ namespace Google.Protobuf.Reflection {
           }
         }
 
+        /// <summary>Field number for the "leading_detached_comments" field.</summary>
         public const int LeadingDetachedCommentsFieldNumber = 6;
         private static readonly pb::FieldCodec<string> _repeated_leadingDetachedComments_codec
             = pb::FieldCodec.ForString(50);
diff --git a/csharp/src/Google.Protobuf/Reflection/FieldDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/FieldDescriptor.cs
index 901cbf47..619a6ac8 100644
--- a/csharp/src/Google.Protobuf/Reflection/FieldDescriptor.cs
+++ b/csharp/src/Google.Protobuf/Reflection/FieldDescriptor.cs
@@ -252,7 +252,7 @@ namespace Google.Protobuf.Reflection
             {
                 if (fieldType != FieldType.Message)
                 {
-                    throw new InvalidOperationException("MessageType is only valid for enum fields.");
+                    throw new InvalidOperationException("MessageType is only valid for message fields.");
                 }
                 return messageType;
             }
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Any.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Any.cs
index 204b37cf..4a704018 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Any.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Any.cs
@@ -11,10 +11,12 @@ namespace Google.Protobuf.WellKnownTypes {
 
   namespace Proto {
 
+    /// <summary>Holder for reflection information generated from google/protobuf/any.proto</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Any {
 
       #region Descriptor
+      /// <summary>File descriptor for google/protobuf/any.proto</summary>
       public static pbr::FileDescriptor Descriptor {
         get { return descriptor; }
       }
@@ -23,9 +25,9 @@ namespace Google.Protobuf.WellKnownTypes {
       static Any() {
         byte[] descriptorData = global::System.Convert.FromBase64String(
             string.Concat(
-              "Chlnb29nbGUvcHJvdG9idWYvYW55LnByb3RvEg9nb29nbGUucHJvdG9idWYi", 
-              "JgoDQW55EhAKCHR5cGVfdXJsGAEgASgJEg0KBXZhbHVlGAIgASgMQksKE2Nv", 
-              "bS5nb29nbGUucHJvdG9idWZCCEFueVByb3RvUAGgAQGiAgNHUEKqAh5Hb29n", 
+              "Chlnb29nbGUvcHJvdG9idWYvYW55LnByb3RvEg9nb29nbGUucHJvdG9idWYi",
+              "JgoDQW55EhAKCHR5cGVfdXJsGAEgASgJEg0KBXZhbHVlGAIgASgMQksKE2Nv",
+              "bS5nb29nbGUucHJvdG9idWZCCEFueVByb3RvUAGgAQGiAgNHUEKqAh5Hb29n",
               "bGUuUHJvdG9idWYuV2VsbEtub3duVHlwZXNiBnByb3RvMw=="));
         descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
             new pbr::FileDescriptor[] { },
@@ -38,6 +40,33 @@ namespace Google.Protobuf.WellKnownTypes {
     }
   }
   #region Messages
+  /// <summary>
+  ///  `Any` contains an arbitrary serialized message along with a URL
+  ///  that describes the type of the serialized message.
+  ///  JSON
+  ///  ====
+  ///  The JSON representation of an `Any` value uses the regular
+  ///  representation of the deserialized, embedded message, with an
+  ///  additional field `@type` which contains the type URL. Example:
+  ///      package google.profile;
+  ///      message Person {
+  ///        string first_name = 1;
+  ///        string last_name = 2;
+  ///      }
+  ///      {
+  ///        "@type": "type.googleapis.com/google.profile.Person",
+  ///        "firstName": &lt;string>,
+  ///        "lastName": &lt;string>
+  ///      }
+  ///  If the embedded message type is well-known and has a custom JSON
+  ///  representation, that representation will be embedded adding a field
+  ///  `value` which holds the custom JSON in addition to the the `@type`
+  ///  field. Example (for message [google.protobuf.Duration][google.protobuf.Duration]):
+  ///      {
+  ///        "@type": "type.googleapis.com/google.protobuf.Duration",
+  ///        "value": "1.212s"
+  ///      }
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Any : pb::IMessage<Any> {
     private static readonly pb::MessageParser<Any> _parser = new pb::MessageParser<Any>(() => new Any());
@@ -66,8 +95,27 @@ namespace Google.Protobuf.WellKnownTypes {
       return new Any(this);
     }
 
+    /// <summary>Field number for the "type_url" field.</summary>
     public const int TypeUrlFieldNumber = 1;
     private string typeUrl_ = "";
+    /// <summary>
+    ///  A URL/resource name whose content describes the type of the
+    ///  serialized message.
+    ///  For URLs which use the schema `http`, `https`, or no schema, the
+    ///  following restrictions and interpretations apply:
+    ///  * If no schema is provided, `https` is assumed.
+    ///  * The last segment of the URL's path must represent the fully
+    ///    qualified name of the type (as in `path/google.protobuf.Duration`).
+    ///  * An HTTP GET on the URL must yield a [google.protobuf.Type][google.protobuf.Type]
+    ///    value in binary format, or produce an error.
+    ///  * Applications are allowed to cache lookup results based on the
+    ///    URL, or have them precompiled into a binary to avoid any
+    ///    lookup. Therefore, binary compatibility needs to be preserved
+    ///    on changes to types. (Use versioned type names to manage
+    ///    breaking changes.)
+    ///  Schemas other than `http`, `https` (or the empty schema) might be
+    ///  used with implementation specific semantics.
+    /// </summary>
     public string TypeUrl {
       get { return typeUrl_; }
       set {
@@ -75,8 +123,12 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 2;
     private pb::ByteString value_ = pb::ByteString.Empty;
+    /// <summary>
+    ///  Must be valid serialized data of the above specified type.
+    /// </summary>
     public pb::ByteString Value {
       get { return value_; }
       set {
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/AnyPartial.cs b/csharp/src/Google.Protobuf/WellKnownTypes/AnyPartial.cs
new file mode 100644
index 00000000..082f7432
--- /dev/null
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/AnyPartial.cs
@@ -0,0 +1,79 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2015 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#endregion
+
+using Google.Protobuf.Reflection;
+
+namespace Google.Protobuf.WellKnownTypes
+{
+    public partial class Any
+    {
+        // This could be moved to MessageDescriptor if we wanted to, but keeping it here means
+        // all the Any-specific code is in the same place.
+        private static string GetTypeUrl(MessageDescriptor descriptor)
+        {
+            return "type.googleapis.com/" + descriptor.FullName;
+        }
+
+        /// <summary>
+        /// Unpacks the content of this Any message into the target message type,
+        /// which must match the type URL within this Any message.
+        /// </summary>
+        /// <typeparam name="T">The type of message to unpack the content into.</typeparam>
+        /// <returns>The unpacked message.</returns>
+        /// <exception cref="InvalidProtocolBufferException">The target message type doesn't match the type URL in this message</exception>
+        public T Unpack<T>() where T : IMessage, new()
+        {
+            // Note: this doesn't perform as well is it might. We could take a MessageParser<T> in an alternative overload,
+            // which would be expected to perform slightly better... although the difference is likely to be negligible.
+            T target = new T();
+            string targetTypeUrl = GetTypeUrl(target.Descriptor);
+            if (TypeUrl != targetTypeUrl)
+            {
+                throw new InvalidProtocolBufferException(string.Format("Type url for {0} is {1}; Any message's type url is {2}",
+                    target.Descriptor.Name, targetTypeUrl, TypeUrl));
+            }
+            target.MergeFrom(Value);
+            return target;
+        }
+
+        /// <summary>
+        /// Packs the specified message into an Any message.
+        /// </summary>
+        /// <param name="message">The message to pack.</param>
+        /// <returns>An Any message with the content and type URL of <paramref name="message"/>.</returns>
+        public static Any Pack(IMessage message)
+        {
+            Preconditions.CheckNotNull(message, "message");
+            return new Any { TypeUrl = GetTypeUrl(message.Descriptor), Value = message.ToByteString() };
+        }
+    }
+}
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Api.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Api.cs
index a5f95093..2c64314d 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Api.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Api.cs
@@ -11,10 +11,12 @@ namespace Google.Protobuf.WellKnownTypes {
 
   namespace Proto {
 
+    /// <summary>Holder for reflection information generated from google/protobuf/api.proto</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Api {
 
       #region Descriptor
+      /// <summary>File descriptor for google/protobuf/api.proto</summary>
       public static pbr::FileDescriptor Descriptor {
         get { return descriptor; }
       }
@@ -23,24 +25,28 @@ namespace Google.Protobuf.WellKnownTypes {
       static Api() {
         byte[] descriptorData = global::System.Convert.FromBase64String(
             string.Concat(
-              "Chlnb29nbGUvcHJvdG9idWYvYXBpLnByb3RvEg9nb29nbGUucHJvdG9idWYa", 
-              "JGdvb2dsZS9wcm90b2J1Zi9zb3VyY2VfY29udGV4dC5wcm90bxoaZ29vZ2xl", 
-              "L3Byb3RvYnVmL3R5cGUucHJvdG8isAEKA0FwaRIMCgRuYW1lGAEgASgJEigK", 
-              "B21ldGhvZHMYAiADKAsyFy5nb29nbGUucHJvdG9idWYuTWV0aG9kEigKB29w", 
-              "dGlvbnMYAyADKAsyFy5nb29nbGUucHJvdG9idWYuT3B0aW9uEg8KB3ZlcnNp", 
-              "b24YBCABKAkSNgoOc291cmNlX2NvbnRleHQYBSABKAsyHi5nb29nbGUucHJv", 
-              "dG9idWYuU291cmNlQ29udGV4dCKsAQoGTWV0aG9kEgwKBG5hbWUYASABKAkS", 
-              "GAoQcmVxdWVzdF90eXBlX3VybBgCIAEoCRIZChFyZXF1ZXN0X3N0cmVhbWlu", 
-              "ZxgDIAEoCBIZChFyZXNwb25zZV90eXBlX3VybBgEIAEoCRIaChJyZXNwb25z", 
-              "ZV9zdHJlYW1pbmcYBSABKAgSKAoHb3B0aW9ucxgGIAMoCzIXLmdvb2dsZS5w", 
-              "cm90b2J1Zi5PcHRpb25CSAoTY29tLmdvb2dsZS5wcm90b2J1ZkIIQXBpUHJv", 
-              "dG9QAaICA0dQQqoCHkdvb2dsZS5Qcm90b2J1Zi5XZWxsS25vd25UeXBlc2IG", 
-              "cHJvdG8z"));
+              "Chlnb29nbGUvcHJvdG9idWYvYXBpLnByb3RvEg9nb29nbGUucHJvdG9idWYa",
+              "JGdvb2dsZS9wcm90b2J1Zi9zb3VyY2VfY29udGV4dC5wcm90bxoaZ29vZ2xl",
+              "L3Byb3RvYnVmL3R5cGUucHJvdG8igQIKA0FwaRIMCgRuYW1lGAEgASgJEigK",
+              "B21ldGhvZHMYAiADKAsyFy5nb29nbGUucHJvdG9idWYuTWV0aG9kEigKB29w",
+              "dGlvbnMYAyADKAsyFy5nb29nbGUucHJvdG9idWYuT3B0aW9uEg8KB3ZlcnNp",
+              "b24YBCABKAkSNgoOc291cmNlX2NvbnRleHQYBSABKAsyHi5nb29nbGUucHJv",
+              "dG9idWYuU291cmNlQ29udGV4dBImCgZtaXhpbnMYBiADKAsyFi5nb29nbGUu",
+              "cHJvdG9idWYuTWl4aW4SJwoGc3ludGF4GAcgASgOMhcuZ29vZ2xlLnByb3Rv",
+              "YnVmLlN5bnRheCLVAQoGTWV0aG9kEgwKBG5hbWUYASABKAkSGAoQcmVxdWVz",
+              "dF90eXBlX3VybBgCIAEoCRIZChFyZXF1ZXN0X3N0cmVhbWluZxgDIAEoCBIZ",
+              "ChFyZXNwb25zZV90eXBlX3VybBgEIAEoCRIaChJyZXNwb25zZV9zdHJlYW1p",
+              "bmcYBSABKAgSKAoHb3B0aW9ucxgGIAMoCzIXLmdvb2dsZS5wcm90b2J1Zi5P",
+              "cHRpb24SJwoGc3ludGF4GAcgASgOMhcuZ29vZ2xlLnByb3RvYnVmLlN5bnRh",
+              "eCIjCgVNaXhpbhIMCgRuYW1lGAEgASgJEgwKBHJvb3QYAiABKAlCSwoTY29t",
+              "Lmdvb2dsZS5wcm90b2J1ZkIIQXBpUHJvdG9QAaABAaICA0dQQqoCHkdvb2ds",
+              "ZS5Qcm90b2J1Zi5XZWxsS25vd25UeXBlc2IGcHJvdG8z"));
         descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
             new pbr::FileDescriptor[] { global::Google.Protobuf.WellKnownTypes.Proto.SourceContext.Descriptor, global::Google.Protobuf.WellKnownTypes.Proto.Type.Descriptor, },
             new pbr::GeneratedCodeInfo(null, new pbr::GeneratedCodeInfo[] {
-              new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.Api), new[]{ "Name", "Methods", "Options", "Version", "SourceContext" }, null, null, null),
-              new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.Method), new[]{ "Name", "RequestTypeUrl", "RequestStreaming", "ResponseTypeUrl", "ResponseStreaming", "Options" }, null, null, null)
+              new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.Api), new[]{ "Name", "Methods", "Options", "Version", "SourceContext", "Mixins", "Syntax" }, null, null, null),
+              new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.Method), new[]{ "Name", "RequestTypeUrl", "RequestStreaming", "ResponseTypeUrl", "ResponseStreaming", "Options", "Syntax" }, null, null, null),
+              new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.Mixin), new[]{ "Name", "Root" }, null, null, null)
             }));
       }
       #endregion
@@ -48,6 +54,9 @@ namespace Google.Protobuf.WellKnownTypes {
     }
   }
   #region Messages
+  /// <summary>
+  ///  Api is a light-weight descriptor for a protocol buffer service.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Api : pb::IMessage<Api> {
     private static readonly pb::MessageParser<Api> _parser = new pb::MessageParser<Api>(() => new Api());
@@ -73,14 +82,21 @@ namespace Google.Protobuf.WellKnownTypes {
       options_ = other.options_.Clone();
       version_ = other.version_;
       SourceContext = other.sourceContext_ != null ? other.SourceContext.Clone() : null;
+      mixins_ = other.mixins_.Clone();
+      syntax_ = other.syntax_;
     }
 
     public Api Clone() {
       return new Api(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
+    /// <summary>
+    ///  The fully qualified name of this api, including package name
+    ///  followed by the api's simple name.
+    /// </summary>
     public string Name {
       get { return name_; }
       set {
@@ -88,24 +104,53 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "methods" field.</summary>
     public const int MethodsFieldNumber = 2;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Method> _repeated_methods_codec
         = pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.Method.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Method> methods_ = new pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Method>();
+    /// <summary>
+    ///  The methods of this api, in unspecified order.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Method> Methods {
       get { return methods_; }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 3;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Option> _repeated_options_codec
         = pb::FieldCodec.ForMessage(26, global::Google.Protobuf.WellKnownTypes.Option.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option> options_ = new pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option>();
+    /// <summary>
+    ///  Any metadata attached to the API.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option> Options {
       get { return options_; }
     }
 
+    /// <summary>Field number for the "version" field.</summary>
     public const int VersionFieldNumber = 4;
     private string version_ = "";
+    /// <summary>
+    ///  A version string for this api. If specified, must have the form
+    ///  `major-version.minor-version`, as in `1.10`. If the minor version
+    ///  is omitted, it defaults to zero. If the entire version field is
+    ///  empty, the major version is derived from the package name, as
+    ///  outlined below. If the field is not empty, the version in the
+    ///  package name will be verified to be consistent with what is
+    ///  provided here.
+    ///  The versioning schema uses [semantic
+    ///  versioning](http://semver.org) where the major version number
+    ///  indicates a breaking change and the minor version an additive,
+    ///  non-breaking change. Both version numbers are signals to users
+    ///  what to expect from different versions, and should be carefully
+    ///  chosen based on the product plan.
+    ///  The major version is also reflected in the package name of the
+    ///  API, which must end in `v&lt;major-version>`, as in
+    ///  `google.feature.v1`. For major versions 0 and 1, the suffix can
+    ///  be omitted. Zero major versions must only be used for
+    ///  experimental, none-GA apis.
+    /// </summary>
     public string Version {
       get { return version_; }
       set {
@@ -113,8 +158,13 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "source_context" field.</summary>
     public const int SourceContextFieldNumber = 5;
     private global::Google.Protobuf.WellKnownTypes.SourceContext sourceContext_;
+    /// <summary>
+    ///  Source context for the protocol buffer service represented by this
+    ///  message.
+    /// </summary>
     public global::Google.Protobuf.WellKnownTypes.SourceContext SourceContext {
       get { return sourceContext_; }
       set {
@@ -122,6 +172,31 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "mixins" field.</summary>
+    public const int MixinsFieldNumber = 6;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Mixin> _repeated_mixins_codec
+        = pb::FieldCodec.ForMessage(50, global::Google.Protobuf.WellKnownTypes.Mixin.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Mixin> mixins_ = new pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Mixin>();
+    /// <summary>
+    ///  Included APIs. See [Mixin][].
+    /// </summary>
+    public pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Mixin> Mixins {
+      get { return mixins_; }
+    }
+
+    /// <summary>Field number for the "syntax" field.</summary>
+    public const int SyntaxFieldNumber = 7;
+    private global::Google.Protobuf.WellKnownTypes.Syntax syntax_ = global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2;
+    /// <summary>
+    ///  The source syntax of the service.
+    /// </summary>
+    public global::Google.Protobuf.WellKnownTypes.Syntax Syntax {
+      get { return syntax_; }
+      set {
+        syntax_ = value;
+      }
+    }
+
     public override bool Equals(object other) {
       return Equals(other as Api);
     }
@@ -138,6 +213,8 @@ namespace Google.Protobuf.WellKnownTypes {
       if(!options_.Equals(other.options_)) return false;
       if (Version != other.Version) return false;
       if (!object.Equals(SourceContext, other.SourceContext)) return false;
+      if(!mixins_.Equals(other.mixins_)) return false;
+      if (Syntax != other.Syntax) return false;
       return true;
     }
 
@@ -148,6 +225,8 @@ namespace Google.Protobuf.WellKnownTypes {
       hash ^= options_.GetHashCode();
       if (Version.Length != 0) hash ^= Version.GetHashCode();
       if (sourceContext_ != null) hash ^= SourceContext.GetHashCode();
+      hash ^= mixins_.GetHashCode();
+      if (Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) hash ^= Syntax.GetHashCode();
       return hash;
     }
 
@@ -170,6 +249,11 @@ namespace Google.Protobuf.WellKnownTypes {
         output.WriteRawTag(42);
         output.WriteMessage(SourceContext);
       }
+      mixins_.WriteTo(output, _repeated_mixins_codec);
+      if (Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) {
+        output.WriteRawTag(56);
+        output.WriteEnum((int) Syntax);
+      }
     }
 
     public int CalculateSize() {
@@ -185,6 +269,10 @@ namespace Google.Protobuf.WellKnownTypes {
       if (sourceContext_ != null) {
         size += 1 + pb::CodedOutputStream.ComputeMessageSize(SourceContext);
       }
+      size += mixins_.CalculateSize(_repeated_mixins_codec);
+      if (Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) {
+        size += 1 + pb::CodedOutputStream.ComputeEnumSize((int) Syntax);
+      }
       return size;
     }
 
@@ -206,6 +294,10 @@ namespace Google.Protobuf.WellKnownTypes {
         }
         SourceContext.MergeFrom(other.SourceContext);
       }
+      mixins_.Add(other.mixins_);
+      if (other.Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) {
+        Syntax = other.Syntax;
+      }
     }
 
     public void MergeFrom(pb::CodedInputStream input) {
@@ -238,12 +330,23 @@ namespace Google.Protobuf.WellKnownTypes {
             input.ReadMessage(sourceContext_);
             break;
           }
+          case 50: {
+            mixins_.AddEntriesFrom(input, _repeated_mixins_codec);
+            break;
+          }
+          case 56: {
+            syntax_ = (global::Google.Protobuf.WellKnownTypes.Syntax) input.ReadEnum();
+            break;
+          }
         }
       }
     }
 
   }
 
+  /// <summary>
+  ///  Method represents a method of an api.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Method : pb::IMessage<Method> {
     private static readonly pb::MessageParser<Method> _parser = new pb::MessageParser<Method>(() => new Method());
@@ -270,14 +373,19 @@ namespace Google.Protobuf.WellKnownTypes {
       responseTypeUrl_ = other.responseTypeUrl_;
       responseStreaming_ = other.responseStreaming_;
       options_ = other.options_.Clone();
+      syntax_ = other.syntax_;
     }
 
     public Method Clone() {
       return new Method(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
+    /// <summary>
+    ///  The simple name of this method.
+    /// </summary>
     public string Name {
       get { return name_; }
       set {
@@ -285,8 +393,12 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "request_type_url" field.</summary>
     public const int RequestTypeUrlFieldNumber = 2;
     private string requestTypeUrl_ = "";
+    /// <summary>
+    ///  A URL of the input message type.
+    /// </summary>
     public string RequestTypeUrl {
       get { return requestTypeUrl_; }
       set {
@@ -294,8 +406,12 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "request_streaming" field.</summary>
     public const int RequestStreamingFieldNumber = 3;
     private bool requestStreaming_;
+    /// <summary>
+    ///  If true, the request is streamed.
+    /// </summary>
     public bool RequestStreaming {
       get { return requestStreaming_; }
       set {
@@ -303,8 +419,12 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "response_type_url" field.</summary>
     public const int ResponseTypeUrlFieldNumber = 4;
     private string responseTypeUrl_ = "";
+    /// <summary>
+    ///  The URL of the output message type.
+    /// </summary>
     public string ResponseTypeUrl {
       get { return responseTypeUrl_; }
       set {
@@ -312,8 +432,12 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "response_streaming" field.</summary>
     public const int ResponseStreamingFieldNumber = 5;
     private bool responseStreaming_;
+    /// <summary>
+    ///  If true, the response is streamed.
+    /// </summary>
     public bool ResponseStreaming {
       get { return responseStreaming_; }
       set {
@@ -321,14 +445,31 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 6;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Option> _repeated_options_codec
         = pb::FieldCodec.ForMessage(50, global::Google.Protobuf.WellKnownTypes.Option.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option> options_ = new pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option>();
+    /// <summary>
+    ///  Any metadata attached to the method.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option> Options {
       get { return options_; }
     }
 
+    /// <summary>Field number for the "syntax" field.</summary>
+    public const int SyntaxFieldNumber = 7;
+    private global::Google.Protobuf.WellKnownTypes.Syntax syntax_ = global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2;
+    /// <summary>
+    ///  The source syntax of this method.
+    /// </summary>
+    public global::Google.Protobuf.WellKnownTypes.Syntax Syntax {
+      get { return syntax_; }
+      set {
+        syntax_ = value;
+      }
+    }
+
     public override bool Equals(object other) {
       return Equals(other as Method);
     }
@@ -346,6 +487,7 @@ namespace Google.Protobuf.WellKnownTypes {
       if (ResponseTypeUrl != other.ResponseTypeUrl) return false;
       if (ResponseStreaming != other.ResponseStreaming) return false;
       if(!options_.Equals(other.options_)) return false;
+      if (Syntax != other.Syntax) return false;
       return true;
     }
 
@@ -357,6 +499,7 @@ namespace Google.Protobuf.WellKnownTypes {
       if (ResponseTypeUrl.Length != 0) hash ^= ResponseTypeUrl.GetHashCode();
       if (ResponseStreaming != false) hash ^= ResponseStreaming.GetHashCode();
       hash ^= options_.GetHashCode();
+      if (Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) hash ^= Syntax.GetHashCode();
       return hash;
     }
 
@@ -386,6 +529,10 @@ namespace Google.Protobuf.WellKnownTypes {
         output.WriteBool(ResponseStreaming);
       }
       options_.WriteTo(output, _repeated_options_codec);
+      if (Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) {
+        output.WriteRawTag(56);
+        output.WriteEnum((int) Syntax);
+      }
     }
 
     public int CalculateSize() {
@@ -406,6 +553,9 @@ namespace Google.Protobuf.WellKnownTypes {
         size += 1 + 1;
       }
       size += options_.CalculateSize(_repeated_options_codec);
+      if (Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) {
+        size += 1 + pb::CodedOutputStream.ComputeEnumSize((int) Syntax);
+      }
       return size;
     }
 
@@ -429,6 +579,9 @@ namespace Google.Protobuf.WellKnownTypes {
         ResponseStreaming = other.ResponseStreaming;
       }
       options_.Add(other.options_);
+      if (other.Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) {
+        Syntax = other.Syntax;
+      }
     }
 
     public void MergeFrom(pb::CodedInputStream input) {
@@ -462,6 +615,211 @@ namespace Google.Protobuf.WellKnownTypes {
             options_.AddEntriesFrom(input, _repeated_options_codec);
             break;
           }
+          case 56: {
+            syntax_ = (global::Google.Protobuf.WellKnownTypes.Syntax) input.ReadEnum();
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  /// <summary>
+  ///  Declares an API to be included in this API. The including API must
+  ///  redeclare all the methods from the included API, but documentation
+  ///  and options are inherited as follows:
+  ///  - If after comment and whitespace stripping, the documentation
+  ///    string of the redeclared method is empty, it will be inherited
+  ///    from the original method.
+  ///  - Each annotation belonging to the service config (http,
+  ///    visibility) which is not set in the redeclared method will be
+  ///    inherited.
+  ///  - If an http annotation is inherited, the path pattern will be
+  ///    modified as follows. Any version prefix will be replaced by the
+  ///    version of the including API plus the [root][] path if specified.
+  ///  Example of a simple mixin:
+  ///      package google.acl.v1;
+  ///      service AccessControl {
+  ///        // Get the underlying ACL object.
+  ///        rpc GetAcl(GetAclRequest) returns (Acl) {
+  ///          option (google.api.http).get = "/v1/{resource=**}:getAcl";
+  ///        }
+  ///      }
+  ///      package google.storage.v2;
+  ///      service Storage {
+  ///        // (-- see AccessControl.GetAcl --)
+  ///        rpc GetAcl(GetAclRequest) returns (Acl);
+  ///        // Get a data record.
+  ///        rpc GetData(GetDataRequest) returns (Data) {
+  ///          option (google.api.http).get = "/v2/{resource=**}";
+  ///        }
+  ///      }
+  ///  Example of a mixin configuration:
+  ///      apis:
+  ///      - name: google.storage.v2.Storage
+  ///        mixins:
+  ///        - name: google.acl.v1.AccessControl
+  ///  The mixin construct implies that all methods in `AccessControl` are
+  ///  also declared with same name and request/response types in
+  ///  `Storage`. A documentation generator or annotation processor will
+  ///  see the effective `Storage.GetAcl` method after inherting
+  ///  documentation and annotations as follows:
+  ///      service Storage {
+  ///        // Get the underlying ACL object.
+  ///        rpc GetAcl(GetAclRequest) returns (Acl) {
+  ///          option (google.api.http).get = "/v2/{resource=**}:getAcl";
+  ///        }
+  ///        ...
+  ///      }
+  ///  Note how the version in the path pattern changed from `v1` to `v2`.
+  ///  If the `root` field in the mixin is specified, it should be a
+  ///  relative path under which inherited HTTP paths are placed. Example:
+  ///      apis:
+  ///      - name: google.storage.v2.Storage
+  ///        mixins:
+  ///        - name: google.acl.v1.AccessControl
+  ///          root: acls
+  ///  This implies the following inherited HTTP annotation:
+  ///      service Storage {
+  ///        // Get the underlying ACL object.
+  ///        rpc GetAcl(GetAclRequest) returns (Acl) {
+  ///          option (google.api.http).get = "/v2/acls/{resource=**}:getAcl";
+  ///        }
+  ///        ...
+  ///      }
+  /// </summary>
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  public sealed partial class Mixin : pb::IMessage<Mixin> {
+    private static readonly pb::MessageParser<Mixin> _parser = new pb::MessageParser<Mixin>(() => new Mixin());
+    public static pb::MessageParser<Mixin> Parser { get { return _parser; } }
+
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.WellKnownTypes.Proto.Api.Descriptor.MessageTypes[2]; }
+    }
+
+    pbr::MessageDescriptor pb::IMessage.Descriptor {
+      get { return Descriptor; }
+    }
+
+    public Mixin() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public Mixin(Mixin other) : this() {
+      name_ = other.name_;
+      root_ = other.root_;
+    }
+
+    public Mixin Clone() {
+      return new Mixin(this);
+    }
+
+    /// <summary>Field number for the "name" field.</summary>
+    public const int NameFieldNumber = 1;
+    private string name_ = "";
+    /// <summary>
+    ///  The fully qualified name of the API which is included.
+    /// </summary>
+    public string Name {
+      get { return name_; }
+      set {
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
+      }
+    }
+
+    /// <summary>Field number for the "root" field.</summary>
+    public const int RootFieldNumber = 2;
+    private string root_ = "";
+    /// <summary>
+    ///  If non-empty specifies a path under which inherited HTTP paths
+    ///  are rooted.
+    /// </summary>
+    public string Root {
+      get { return root_; }
+      set {
+        root_ = pb::Preconditions.CheckNotNull(value, "value");
+      }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as Mixin);
+    }
+
+    public bool Equals(Mixin other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Name != other.Name) return false;
+      if (Root != other.Root) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Name.Length != 0) hash ^= Name.GetHashCode();
+      if (Root.Length != 0) hash ^= Root.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Name.Length != 0) {
+        output.WriteRawTag(10);
+        output.WriteString(Name);
+      }
+      if (Root.Length != 0) {
+        output.WriteRawTag(18);
+        output.WriteString(Root);
+      }
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Name.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Name);
+      }
+      if (Root.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Root);
+      }
+      return size;
+    }
+
+    public void MergeFrom(Mixin other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Name.Length != 0) {
+        Name = other.Name;
+      }
+      if (other.Root.Length != 0) {
+        Root = other.Root;
+      }
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while ((tag = input.ReadTag()) != 0) {
+        switch(tag) {
+          default:
+            input.SkipLastField();
+            break;
+          case 10: {
+            Name = input.ReadString();
+            break;
+          }
+          case 18: {
+            Root = input.ReadString();
+            break;
+          }
         }
       }
     }
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Duration.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Duration.cs
index aa34f2d8..39251e2e 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Duration.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Duration.cs
@@ -11,10 +11,12 @@ namespace Google.Protobuf.WellKnownTypes {
 
   namespace Proto {
 
+    /// <summary>Holder for reflection information generated from google/protobuf/duration.proto</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Duration {
 
       #region Descriptor
+      /// <summary>File descriptor for google/protobuf/duration.proto</summary>
       public static pbr::FileDescriptor Descriptor {
         get { return descriptor; }
       }
@@ -23,10 +25,10 @@ namespace Google.Protobuf.WellKnownTypes {
       static Duration() {
         byte[] descriptorData = global::System.Convert.FromBase64String(
             string.Concat(
-              "Ch5nb29nbGUvcHJvdG9idWYvZHVyYXRpb24ucHJvdG8SD2dvb2dsZS5wcm90", 
-              "b2J1ZiIqCghEdXJhdGlvbhIPCgdzZWNvbmRzGAEgASgDEg0KBW5hbm9zGAIg", 
-              "ASgFQlAKE2NvbS5nb29nbGUucHJvdG9idWZCDUR1cmF0aW9uUHJvdG9QAaAB", 
-              "AaICA0dQQqoCHkdvb2dsZS5Qcm90b2J1Zi5XZWxsS25vd25UeXBlc2IGcHJv", 
+              "Ch5nb29nbGUvcHJvdG9idWYvZHVyYXRpb24ucHJvdG8SD2dvb2dsZS5wcm90",
+              "b2J1ZiIqCghEdXJhdGlvbhIPCgdzZWNvbmRzGAEgASgDEg0KBW5hbm9zGAIg",
+              "ASgFQlAKE2NvbS5nb29nbGUucHJvdG9idWZCDUR1cmF0aW9uUHJvdG9QAaAB",
+              "AaICA0dQQqoCHkdvb2dsZS5Qcm90b2J1Zi5XZWxsS25vd25UeXBlc2IGcHJv",
               "dG8z"));
         descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
             new pbr::FileDescriptor[] { },
@@ -39,6 +41,40 @@ namespace Google.Protobuf.WellKnownTypes {
     }
   }
   #region Messages
+  /// <summary>
+  ///  A Duration represents a signed, fixed-length span of time represented
+  ///  as a count of seconds and fractions of seconds at nanosecond
+  ///  resolution. It is independent of any calendar and concepts like "day"
+  ///  or "month". It is related to Timestamp in that the difference between
+  ///  two Timestamp values is a Duration and it can be added or subtracted
+  ///  from a Timestamp. Range is approximately +-10,000 years.
+  ///  Example 1: Compute Duration from two Timestamps in pseudo code.
+  ///      Timestamp start = ...;
+  ///      Timestamp end = ...;
+  ///      Duration duration = ...;
+  ///      duration.seconds = end.seconds - start.seconds;
+  ///      duration.nanos = end.nanos - start.nanos;
+  ///      if (duration.seconds &lt; 0 &amp;&amp; duration.nanos > 0) {
+  ///        duration.seconds += 1;
+  ///        duration.nanos -= 1000000000;
+  ///      } else if (durations.seconds > 0 &amp;&amp; duration.nanos &lt; 0) {
+  ///        duration.seconds -= 1;
+  ///        duration.nanos += 1000000000;
+  ///      }
+  ///  Example 2: Compute Timestamp from Timestamp + Duration in pseudo code.
+  ///      Timestamp start = ...;
+  ///      Duration duration = ...;
+  ///      Timestamp end = ...;
+  ///      end.seconds = start.seconds + duration.seconds;
+  ///      end.nanos = start.nanos + duration.nanos;
+  ///      if (end.nanos &lt; 0) {
+  ///        end.seconds -= 1;
+  ///        end.nanos += 1000000000;
+  ///      } else if (end.nanos >= 1000000000) {
+  ///        end.seconds += 1;
+  ///        end.nanos -= 1000000000;
+  ///      }
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Duration : pb::IMessage<Duration> {
     private static readonly pb::MessageParser<Duration> _parser = new pb::MessageParser<Duration>(() => new Duration());
@@ -67,8 +103,13 @@ namespace Google.Protobuf.WellKnownTypes {
       return new Duration(this);
     }
 
+    /// <summary>Field number for the "seconds" field.</summary>
     public const int SecondsFieldNumber = 1;
     private long seconds_;
+    /// <summary>
+    ///  Signed seconds of the span of time. Must be from -315,576,000,000
+    ///  to +315,576,000,000 inclusive.
+    /// </summary>
     public long Seconds {
       get { return seconds_; }
       set {
@@ -76,8 +117,17 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "nanos" field.</summary>
     public const int NanosFieldNumber = 2;
     private int nanos_;
+    /// <summary>
+    ///  Signed fractions of a second at nanosecond resolution of the span
+    ///  of time. Durations less than one second are represented with a 0
+    ///  `seconds` field and a positive or negative `nanos` field. For durations
+    ///  of one second or more, a non-zero value for the `nanos` field must be
+    ///  of the same sign as the `seconds` field. Must be from -999,999,999
+    ///  to +999,999,999 inclusive.
+    /// </summary>
     public int Nanos {
       get { return nanos_; }
       set {
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Empty.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Empty.cs
index 7d699c1d..18223a9e 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Empty.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Empty.cs
@@ -11,10 +11,12 @@ namespace Google.Protobuf.WellKnownTypes {
 
   namespace Proto {
 
+    /// <summary>Holder for reflection information generated from google/protobuf/empty.proto</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Empty {
 
       #region Descriptor
+      /// <summary>File descriptor for google/protobuf/empty.proto</summary>
       public static pbr::FileDescriptor Descriptor {
         get { return descriptor; }
       }
@@ -23,10 +25,10 @@ namespace Google.Protobuf.WellKnownTypes {
       static Empty() {
         byte[] descriptorData = global::System.Convert.FromBase64String(
             string.Concat(
-              "Chtnb29nbGUvcHJvdG9idWYvZW1wdHkucHJvdG8SD2dvb2dsZS5wcm90b2J1", 
-              "ZiIHCgVFbXB0eUJKChNjb20uZ29vZ2xlLnByb3RvYnVmQgpFbXB0eVByb3Rv", 
-              "UAGiAgNHUEKqAh5Hb29nbGUuUHJvdG9idWYuV2VsbEtub3duVHlwZXNiBnBy", 
-              "b3RvMw=="));
+              "Chtnb29nbGUvcHJvdG9idWYvZW1wdHkucHJvdG8SD2dvb2dsZS5wcm90b2J1",
+              "ZiIHCgVFbXB0eUJNChNjb20uZ29vZ2xlLnByb3RvYnVmQgpFbXB0eVByb3Rv",
+              "UAGgAQGiAgNHUEKqAh5Hb29nbGUuUHJvdG9idWYuV2VsbEtub3duVHlwZXNi",
+              "BnByb3RvMw=="));
         descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
             new pbr::FileDescriptor[] { },
             new pbr::GeneratedCodeInfo(null, new pbr::GeneratedCodeInfo[] {
@@ -38,6 +40,15 @@ namespace Google.Protobuf.WellKnownTypes {
     }
   }
   #region Messages
+  /// <summary>
+  ///  A generic empty message that you can re-use to avoid defining duplicated
+  ///  empty messages in your APIs. A typical example is to use it as the request
+  ///  or the response type of an API method. For instance:
+  ///      service Foo {
+  ///        rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty);
+  ///      }
+  ///  The JSON representation for `Empty` is empty JSON object `{}`.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Empty : pb::IMessage<Empty> {
     private static readonly pb::MessageParser<Empty> _parser = new pb::MessageParser<Empty>(() => new Empty());
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/FieldMask.cs b/csharp/src/Google.Protobuf/WellKnownTypes/FieldMask.cs
index 0dac4403..33c814ef 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/FieldMask.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/FieldMask.cs
@@ -11,10 +11,12 @@ namespace Google.Protobuf.WellKnownTypes {
 
   namespace Proto {
 
+    /// <summary>Holder for reflection information generated from google/protobuf/field_mask.proto</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class FieldMask {
 
       #region Descriptor
+      /// <summary>File descriptor for google/protobuf/field_mask.proto</summary>
       public static pbr::FileDescriptor Descriptor {
         get { return descriptor; }
       }
@@ -23,10 +25,10 @@ namespace Google.Protobuf.WellKnownTypes {
       static FieldMask() {
         byte[] descriptorData = global::System.Convert.FromBase64String(
             string.Concat(
-              "CiBnb29nbGUvcHJvdG9idWYvZmllbGRfbWFzay5wcm90bxIPZ29vZ2xlLnBy", 
-              "b3RvYnVmIhoKCUZpZWxkTWFzaxINCgVwYXRocxgBIAMoCUJOChNjb20uZ29v", 
-              "Z2xlLnByb3RvYnVmQg5GaWVsZE1hc2tQcm90b1ABogIDR1BCqgIeR29vZ2xl", 
-              "LlByb3RvYnVmLldlbGxLbm93blR5cGVzYgZwcm90bzM="));
+              "CiBnb29nbGUvcHJvdG9idWYvZmllbGRfbWFzay5wcm90bxIPZ29vZ2xlLnBy",
+              "b3RvYnVmIhoKCUZpZWxkTWFzaxINCgVwYXRocxgBIAMoCUJRChNjb20uZ29v",
+              "Z2xlLnByb3RvYnVmQg5GaWVsZE1hc2tQcm90b1ABoAEBogIDR1BCqgIeR29v",
+              "Z2xlLlByb3RvYnVmLldlbGxLbm93blR5cGVzYgZwcm90bzM="));
         descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
             new pbr::FileDescriptor[] { },
             new pbr::GeneratedCodeInfo(null, new pbr::GeneratedCodeInfo[] {
@@ -38,6 +40,103 @@ namespace Google.Protobuf.WellKnownTypes {
     }
   }
   #region Messages
+  /// <summary>
+  ///  `FieldMask` represents a set of symbolic field paths, for example:
+  ///      paths: "f.a"
+  ///      paths: "f.b.d"
+  ///  Here `f` represents a field in some root message, `a` and `b`
+  ///  fields in the message found in `f`, and `d` a field found in the
+  ///  message in `f.b`.
+  ///  Field masks are used to specify a subset of fields that should be
+  ///  returned by a get operation or modified by an update operation.
+  ///  Field masks also have a custom JSON encoding (see below).
+  ///  # Field Masks in Projections
+  ///  When used in the context of a projection, a response message or
+  ///  sub-message is filtered by the API to only contain those fields as
+  ///  specified in the mask. For example, if the mask in the previous
+  ///  example is applied to a response message as follows:
+  ///      f {
+  ///        a : 22
+  ///        b {
+  ///          d : 1
+  ///          x : 2
+  ///        }
+  ///        y : 13
+  ///      }
+  ///      z: 8
+  ///  The result will not contain specific values for fields x,y and z
+  ///  (there value will be set to the default, and omitted in proto text
+  ///  output):
+  ///      f {
+  ///        a : 22
+  ///        b {
+  ///          d : 1
+  ///        }
+  ///      }
+  ///  A repeated field is not allowed except at the last position of a
+  ///  field mask.
+  ///  If a FieldMask object is not present in a get operation, the
+  ///  operation applies to all fields (as if a FieldMask of all fields
+  ///  had been specified).
+  ///  Note that a field mask does not necessarily applies to the
+  ///  top-level response message. In case of a REST get operation, the
+  ///  field mask applies directly to the response, but in case of a REST
+  ///  list operation, the mask instead applies to each individual message
+  ///  in the returned resource list. In case of a REST custom method,
+  ///  other definitions may be used. Where the mask applies will be
+  ///  clearly documented together with its declaration in the API.  In
+  ///  any case, the effect on the returned resource/resources is required
+  ///  behavior for APIs.
+  ///  # Field Masks in Update Operations
+  ///  A field mask in update operations specifies which fields of the
+  ///  targeted resource are going to be updated. The API is required
+  ///  to only change the values of the fields as specified in the mask
+  ///  and leave the others untouched. If a resource is passed in to
+  ///  describe the updated values, the API ignores the values of all
+  ///  fields not covered by the mask.
+  ///  In order to reset a field's value to the default, the field must
+  ///  be in the mask and set to the default value in the provided resource.
+  ///  Hence, in order to reset all fields of a resource, provide a default
+  ///  instance of the resource and set all fields in the mask, or do
+  ///  not provide a mask as described below.
+  ///  If a field mask is not present on update, the operation applies to
+  ///  all fields (as if a field mask of all fields has been specified).
+  ///  Note that in the presence of schema evolution, this may mean that
+  ///  fields the client does not know and has therefore not filled into
+  ///  the request will be reset to their default. If this is unwanted
+  ///  behavior, a specific service may require a client to always specify
+  ///  a field mask, producing an error if not.
+  ///  As with get operations, the location of the resource which
+  ///  describes the updated values in the request message depends on the
+  ///  operation kind. In any case, the effect of the field mask is
+  ///  required to be honored by the API.
+  ///  ## Considerations for HTTP REST
+  ///  The HTTP kind of an update operation which uses a field mask must
+  ///  be set to PATCH instead of PUT in order to satisfy HTTP semantics
+  ///  (PUT must only be used for full updates).
+  ///  # JSON Encoding of Field Masks
+  ///  In JSON, a field mask is encoded as a single string where paths are
+  ///  separated by a comma. Fields name in each path are converted
+  ///  to/from lower-camel naming conventions.
+  ///  As an example, consider the following message declarations:
+  ///      message Profile {
+  ///        User user = 1;
+  ///        Photo photo = 2;
+  ///      }
+  ///      message User {
+  ///        string display_name = 1;
+  ///        string address = 2;
+  ///      }
+  ///  In proto a field mask for `Profile` may look as such:
+  ///      mask {
+  ///        paths: "user.display_name"
+  ///        paths: "photo"
+  ///      }
+  ///  In JSON, the same mask is represented as below:
+  ///      {
+  ///        mask: "user.displayName,photo"
+  ///      }
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class FieldMask : pb::IMessage<FieldMask> {
     private static readonly pb::MessageParser<FieldMask> _parser = new pb::MessageParser<FieldMask>(() => new FieldMask());
@@ -65,10 +164,14 @@ namespace Google.Protobuf.WellKnownTypes {
       return new FieldMask(this);
     }
 
+    /// <summary>Field number for the "paths" field.</summary>
     public const int PathsFieldNumber = 1;
     private static readonly pb::FieldCodec<string> _repeated_paths_codec
         = pb::FieldCodec.ForString(10);
     private readonly pbc::RepeatedField<string> paths_ = new pbc::RepeatedField<string>();
+    /// <summary>
+    ///  The set of field mask paths.
+    /// </summary>
     public pbc::RepeatedField<string> Paths {
       get { return paths_; }
     }
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/SourceContext.cs b/csharp/src/Google.Protobuf/WellKnownTypes/SourceContext.cs
index 8347999d..d87c54bd 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/SourceContext.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/SourceContext.cs
@@ -11,10 +11,12 @@ namespace Google.Protobuf.WellKnownTypes {
 
   namespace Proto {
 
+    /// <summary>Holder for reflection information generated from google/protobuf/source_context.proto</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class SourceContext {
 
       #region Descriptor
+      /// <summary>File descriptor for google/protobuf/source_context.proto</summary>
       public static pbr::FileDescriptor Descriptor {
         get { return descriptor; }
       }
@@ -23,11 +25,11 @@ namespace Google.Protobuf.WellKnownTypes {
       static SourceContext() {
         byte[] descriptorData = global::System.Convert.FromBase64String(
             string.Concat(
-              "CiRnb29nbGUvcHJvdG9idWYvc291cmNlX2NvbnRleHQucHJvdG8SD2dvb2ds", 
-              "ZS5wcm90b2J1ZiIiCg1Tb3VyY2VDb250ZXh0EhEKCWZpbGVfbmFtZRgBIAEo", 
-              "CUJSChNjb20uZ29vZ2xlLnByb3RvYnVmQhJTb3VyY2VDb250ZXh0UHJvdG9Q", 
-              "AaICA0dQQqoCHkdvb2dsZS5Qcm90b2J1Zi5XZWxsS25vd25UeXBlc2IGcHJv", 
-              "dG8z"));
+              "CiRnb29nbGUvcHJvdG9idWYvc291cmNlX2NvbnRleHQucHJvdG8SD2dvb2ds",
+              "ZS5wcm90b2J1ZiIiCg1Tb3VyY2VDb250ZXh0EhEKCWZpbGVfbmFtZRgBIAEo",
+              "CUJVChNjb20uZ29vZ2xlLnByb3RvYnVmQhJTb3VyY2VDb250ZXh0UHJvdG9Q",
+              "AaABAaICA0dQQqoCHkdvb2dsZS5Qcm90b2J1Zi5XZWxsS25vd25UeXBlc2IG",
+              "cHJvdG8z"));
         descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
             new pbr::FileDescriptor[] { },
             new pbr::GeneratedCodeInfo(null, new pbr::GeneratedCodeInfo[] {
@@ -39,6 +41,10 @@ namespace Google.Protobuf.WellKnownTypes {
     }
   }
   #region Messages
+  /// <summary>
+  ///  `SourceContext` represents information about the source of a
+  ///  protobuf element, like the file in which it is defined.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class SourceContext : pb::IMessage<SourceContext> {
     private static readonly pb::MessageParser<SourceContext> _parser = new pb::MessageParser<SourceContext>(() => new SourceContext());
@@ -66,8 +72,13 @@ namespace Google.Protobuf.WellKnownTypes {
       return new SourceContext(this);
     }
 
+    /// <summary>Field number for the "file_name" field.</summary>
     public const int FileNameFieldNumber = 1;
     private string fileName_ = "";
+    /// <summary>
+    ///  The path-qualified name of the .proto file that contained the associated
+    ///  protobuf element.  For example: `"google/protobuf/source.proto"`.
+    /// </summary>
     public string FileName {
       get { return fileName_; }
       set {
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Struct.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Struct.cs
index 1e8a8236..a9961bea 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Struct.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Struct.cs
@@ -11,10 +11,12 @@ namespace Google.Protobuf.WellKnownTypes {
 
   namespace Proto {
 
+    /// <summary>Holder for reflection information generated from google/protobuf/struct.proto</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Struct {
 
       #region Descriptor
+      /// <summary>File descriptor for google/protobuf/struct.proto</summary>
       public static pbr::FileDescriptor Descriptor {
         get { return descriptor; }
       }
@@ -23,19 +25,19 @@ namespace Google.Protobuf.WellKnownTypes {
       static Struct() {
         byte[] descriptorData = global::System.Convert.FromBase64String(
             string.Concat(
-              "Chxnb29nbGUvcHJvdG9idWYvc3RydWN0LnByb3RvEg9nb29nbGUucHJvdG9i", 
-              "dWYihAEKBlN0cnVjdBIzCgZmaWVsZHMYASADKAsyIy5nb29nbGUucHJvdG9i", 
-              "dWYuU3RydWN0LkZpZWxkc0VudHJ5GkUKC0ZpZWxkc0VudHJ5EgsKA2tleRgB", 
-              "IAEoCRIlCgV2YWx1ZRgCIAEoCzIWLmdvb2dsZS5wcm90b2J1Zi5WYWx1ZToC", 
-              "OAEi6gEKBVZhbHVlEjAKCm51bGxfdmFsdWUYASABKA4yGi5nb29nbGUucHJv", 
-              "dG9idWYuTnVsbFZhbHVlSAASFgoMbnVtYmVyX3ZhbHVlGAIgASgBSAASFgoM", 
-              "c3RyaW5nX3ZhbHVlGAMgASgJSAASFAoKYm9vbF92YWx1ZRgEIAEoCEgAEi8K", 
-              "DHN0cnVjdF92YWx1ZRgFIAEoCzIXLmdvb2dsZS5wcm90b2J1Zi5TdHJ1Y3RI", 
-              "ABIwCgpsaXN0X3ZhbHVlGAYgASgLMhouZ29vZ2xlLnByb3RvYnVmLkxpc3RW", 
-              "YWx1ZUgAQgYKBGtpbmQiMwoJTGlzdFZhbHVlEiYKBnZhbHVlcxgBIAMoCzIW", 
-              "Lmdvb2dsZS5wcm90b2J1Zi5WYWx1ZSobCglOdWxsVmFsdWUSDgoKTlVMTF9W", 
-              "QUxVRRAAQk4KE2NvbS5nb29nbGUucHJvdG9idWZCC1N0cnVjdFByb3RvUAGg", 
-              "AQGiAgNHUEKqAh5Hb29nbGUuUHJvdG9idWYuV2VsbEtub3duVHlwZXNiBnBy", 
+              "Chxnb29nbGUvcHJvdG9idWYvc3RydWN0LnByb3RvEg9nb29nbGUucHJvdG9i",
+              "dWYihAEKBlN0cnVjdBIzCgZmaWVsZHMYASADKAsyIy5nb29nbGUucHJvdG9i",
+              "dWYuU3RydWN0LkZpZWxkc0VudHJ5GkUKC0ZpZWxkc0VudHJ5EgsKA2tleRgB",
+              "IAEoCRIlCgV2YWx1ZRgCIAEoCzIWLmdvb2dsZS5wcm90b2J1Zi5WYWx1ZToC",
+              "OAEi6gEKBVZhbHVlEjAKCm51bGxfdmFsdWUYASABKA4yGi5nb29nbGUucHJv",
+              "dG9idWYuTnVsbFZhbHVlSAASFgoMbnVtYmVyX3ZhbHVlGAIgASgBSAASFgoM",
+              "c3RyaW5nX3ZhbHVlGAMgASgJSAASFAoKYm9vbF92YWx1ZRgEIAEoCEgAEi8K",
+              "DHN0cnVjdF92YWx1ZRgFIAEoCzIXLmdvb2dsZS5wcm90b2J1Zi5TdHJ1Y3RI",
+              "ABIwCgpsaXN0X3ZhbHVlGAYgASgLMhouZ29vZ2xlLnByb3RvYnVmLkxpc3RW",
+              "YWx1ZUgAQgYKBGtpbmQiMwoJTGlzdFZhbHVlEiYKBnZhbHVlcxgBIAMoCzIW",
+              "Lmdvb2dsZS5wcm90b2J1Zi5WYWx1ZSobCglOdWxsVmFsdWUSDgoKTlVMTF9W",
+              "QUxVRRAAQk4KE2NvbS5nb29nbGUucHJvdG9idWZCC1N0cnVjdFByb3RvUAGg",
+              "AQGiAgNHUEKqAh5Hb29nbGUuUHJvdG9idWYuV2VsbEtub3duVHlwZXNiBnBy",
               "b3RvMw=="));
         descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
             new pbr::FileDescriptor[] { },
@@ -50,13 +52,30 @@ namespace Google.Protobuf.WellKnownTypes {
     }
   }
   #region Enums
+  /// <summary>
+  ///  `NullValue` is a singleton enumeration to represent the null value for the
+  ///  `Value` type union.
+  ///   The JSON representation for `NullValue` is JSON `null`.
+  /// </summary>
   public enum NullValue {
+    /// <summary>
+    ///  Null value.
+    /// </summary>
     NULL_VALUE = 0,
   }
 
   #endregion
 
   #region Messages
+  /// <summary>
+  ///  `Struct` represents a structured data value, consisting of fields
+  ///  which map to dynamically typed values. In some languages, `Struct`
+  ///  might be supported by a native representation. For example, in
+  ///  scripting languages like JS a struct is represented as an
+  ///  object. The details of that representation are described together
+  ///  with the proto support for the language.
+  ///  The JSON representation for `Struct` is JSON object.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Struct : pb::IMessage<Struct> {
     private static readonly pb::MessageParser<Struct> _parser = new pb::MessageParser<Struct>(() => new Struct());
@@ -84,10 +103,14 @@ namespace Google.Protobuf.WellKnownTypes {
       return new Struct(this);
     }
 
+    /// <summary>Field number for the "fields" field.</summary>
     public const int FieldsFieldNumber = 1;
     private static readonly pbc::MapField<string, global::Google.Protobuf.WellKnownTypes.Value>.Codec _map_fields_codec
         = new pbc::MapField<string, global::Google.Protobuf.WellKnownTypes.Value>.Codec(pb::FieldCodec.ForString(10), pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.Value.Parser), 10);
     private readonly pbc::MapField<string, global::Google.Protobuf.WellKnownTypes.Value> fields_ = new pbc::MapField<string, global::Google.Protobuf.WellKnownTypes.Value>();
+    /// <summary>
+    ///  Map of dynamically typed values.
+    /// </summary>
     public pbc::MapField<string, global::Google.Protobuf.WellKnownTypes.Value> Fields {
       get { return fields_; }
     }
@@ -151,6 +174,13 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
 
+  /// <summary>
+  ///  `Value` represents a dynamically typed value which can be either
+  ///  null, a number, a string, a boolean, a recursive struct value, or a
+  ///  list of values. A producer of value is expected to set one of that
+  ///  variants, absence of any variant indicates an error.
+  ///  The JSON representation for `Value` is JSON value.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Value : pb::IMessage<Value> {
     private static readonly pb::MessageParser<Value> _parser = new pb::MessageParser<Value>(() => new Value());
@@ -198,7 +228,11 @@ namespace Google.Protobuf.WellKnownTypes {
       return new Value(this);
     }
 
+    /// <summary>Field number for the "null_value" field.</summary>
     public const int NullValueFieldNumber = 1;
+    /// <summary>
+    ///  Represents a null value.
+    /// </summary>
     public global::Google.Protobuf.WellKnownTypes.NullValue NullValue {
       get { return kindCase_ == KindOneofCase.NullValue ? (global::Google.Protobuf.WellKnownTypes.NullValue) kind_ : global::Google.Protobuf.WellKnownTypes.NullValue.NULL_VALUE; }
       set {
@@ -207,7 +241,11 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "number_value" field.</summary>
     public const int NumberValueFieldNumber = 2;
+    /// <summary>
+    ///  Represents a double value.
+    /// </summary>
     public double NumberValue {
       get { return kindCase_ == KindOneofCase.NumberValue ? (double) kind_ : 0D; }
       set {
@@ -216,7 +254,11 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "string_value" field.</summary>
     public const int StringValueFieldNumber = 3;
+    /// <summary>
+    ///  Represents a string value.
+    /// </summary>
     public string StringValue {
       get { return kindCase_ == KindOneofCase.StringValue ? (string) kind_ : ""; }
       set {
@@ -225,7 +267,11 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "bool_value" field.</summary>
     public const int BoolValueFieldNumber = 4;
+    /// <summary>
+    ///  Represents a boolean value.
+    /// </summary>
     public bool BoolValue {
       get { return kindCase_ == KindOneofCase.BoolValue ? (bool) kind_ : false; }
       set {
@@ -234,7 +280,11 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "struct_value" field.</summary>
     public const int StructValueFieldNumber = 5;
+    /// <summary>
+    ///  Represents a structured value.
+    /// </summary>
     public global::Google.Protobuf.WellKnownTypes.Struct StructValue {
       get { return kindCase_ == KindOneofCase.StructValue ? (global::Google.Protobuf.WellKnownTypes.Struct) kind_ : null; }
       set {
@@ -243,7 +293,11 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "list_value" field.</summary>
     public const int ListValueFieldNumber = 6;
+    /// <summary>
+    ///  Represents a repeated `Value`.
+    /// </summary>
     public global::Google.Protobuf.WellKnownTypes.ListValue ListValue {
       get { return kindCase_ == KindOneofCase.ListValue ? (global::Google.Protobuf.WellKnownTypes.ListValue) kind_ : null; }
       set {
@@ -253,6 +307,7 @@ namespace Google.Protobuf.WellKnownTypes {
     }
 
     private object kind_;
+    /// <summary>Enum of possible cases for the "kind" oneof.</summary>
     public enum KindOneofCase {
       None = 0,
       NullValue = 1,
@@ -432,6 +487,10 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
 
+  /// <summary>
+  ///  `ListValue` is a wrapper around a repeated field of values.
+  ///  The JSON representation for `ListValue` is JSON array.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class ListValue : pb::IMessage<ListValue> {
     private static readonly pb::MessageParser<ListValue> _parser = new pb::MessageParser<ListValue>(() => new ListValue());
@@ -459,10 +518,14 @@ namespace Google.Protobuf.WellKnownTypes {
       return new ListValue(this);
     }
 
+    /// <summary>Field number for the "values" field.</summary>
     public const int ValuesFieldNumber = 1;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Value> _repeated_values_codec
         = pb::FieldCodec.ForMessage(10, global::Google.Protobuf.WellKnownTypes.Value.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Value> values_ = new pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Value>();
+    /// <summary>
+    ///  Repeated field of dynamically typed values.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Value> Values {
       get { return values_; }
     }
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Timestamp.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Timestamp.cs
index d7c0954f..f372f8fd 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Timestamp.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Timestamp.cs
@@ -11,10 +11,12 @@ namespace Google.Protobuf.WellKnownTypes {
 
   namespace Proto {
 
+    /// <summary>Holder for reflection information generated from google/protobuf/timestamp.proto</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Timestamp {
 
       #region Descriptor
+      /// <summary>File descriptor for google/protobuf/timestamp.proto</summary>
       public static pbr::FileDescriptor Descriptor {
         get { return descriptor; }
       }
@@ -23,10 +25,10 @@ namespace Google.Protobuf.WellKnownTypes {
       static Timestamp() {
         byte[] descriptorData = global::System.Convert.FromBase64String(
             string.Concat(
-              "Ch9nb29nbGUvcHJvdG9idWYvdGltZXN0YW1wLnByb3RvEg9nb29nbGUucHJv", 
-              "dG9idWYiKwoJVGltZXN0YW1wEg8KB3NlY29uZHMYASABKAMSDQoFbmFub3MY", 
-              "AiABKAVCUQoTY29tLmdvb2dsZS5wcm90b2J1ZkIOVGltZXN0YW1wUHJvdG9Q", 
-              "AaABAaICA0dQQqoCHkdvb2dsZS5Qcm90b2J1Zi5XZWxsS25vd25UeXBlc2IG", 
+              "Ch9nb29nbGUvcHJvdG9idWYvdGltZXN0YW1wLnByb3RvEg9nb29nbGUucHJv",
+              "dG9idWYiKwoJVGltZXN0YW1wEg8KB3NlY29uZHMYASABKAMSDQoFbmFub3MY",
+              "AiABKAVCUQoTY29tLmdvb2dsZS5wcm90b2J1ZkIOVGltZXN0YW1wUHJvdG9Q",
+              "AaABAaICA0dQQqoCHkdvb2dsZS5Qcm90b2J1Zi5XZWxsS25vd25UeXBlc2IG",
               "cHJvdG8z"));
         descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
             new pbr::FileDescriptor[] { },
@@ -39,6 +41,47 @@ namespace Google.Protobuf.WellKnownTypes {
     }
   }
   #region Messages
+  /// <summary>
+  ///  A Timestamp represents a point in time independent of any time zone
+  ///  or calendar, represented as seconds and fractions of seconds at
+  ///  nanosecond resolution in UTC Epoch time. It is encoded using the
+  ///  Proleptic Gregorian Calendar which extends the Gregorian calendar
+  ///  backwards to year one. It is encoded assuming all minutes are 60
+  ///  seconds long, i.e. leap seconds are "smeared" so that no leap second
+  ///  table is needed for interpretation. Range is from
+  ///  0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z.
+  ///  By restricting to that range, we ensure that we can convert to
+  ///  and from  RFC 3339 date strings.
+  ///  See [https://www.ietf.org/rfc/rfc3339.txt](https://www.ietf.org/rfc/rfc3339.txt).
+  ///  Example 1: Compute Timestamp from POSIX `time()`.
+  ///      Timestamp timestamp;
+  ///      timestamp.set_seconds(time(NULL));
+  ///      timestamp.set_nanos(0);
+  ///  Example 2: Compute Timestamp from POSIX `gettimeofday()`.
+  ///      struct timeval tv;
+  ///      gettimeofday(&amp;tv, NULL);
+  ///      Timestamp timestamp;
+  ///      timestamp.set_seconds(tv.tv_sec);
+  ///      timestamp.set_nanos(tv.tv_usec * 1000);
+  ///  Example 3: Compute Timestamp from Win32 `GetSystemTimeAsFileTime()`.
+  ///      FILETIME ft;
+  ///      GetSystemTimeAsFileTime(&amp;ft);
+  ///      UINT64 ticks = (((UINT64)ft.dwHighDateTime) &lt;&lt; 32) | ft.dwLowDateTime;
+  ///      // A Windows tick is 100 nanoseconds. Windows epoch 1601-01-01T00:00:00Z
+  ///      // is 11644473600 seconds before Unix epoch 1970-01-01T00:00:00Z.
+  ///      Timestamp timestamp;
+  ///      timestamp.set_seconds((INT64) ((ticks / 10000000) - 11644473600LL));
+  ///      timestamp.set_nanos((INT32) ((ticks % 10000000) * 100));
+  ///  Example 4: Compute Timestamp from Java `System.currentTimeMillis()`.
+  ///      long millis = System.currentTimeMillis();
+  ///      Timestamp timestamp = Timestamp.newBuilder().setSeconds(millis / 1000)
+  ///          .setNanos((int) ((millis % 1000) * 1000000)).build();
+  ///  Example 5: Compute Timestamp from current time in Python.
+  ///      now = time.time()
+  ///      seconds = int(now)
+  ///      nanos = int((now - seconds) * 10**9)
+  ///      timestamp = Timestamp(seconds=seconds, nanos=nanos)
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Timestamp : pb::IMessage<Timestamp> {
     private static readonly pb::MessageParser<Timestamp> _parser = new pb::MessageParser<Timestamp>(() => new Timestamp());
@@ -67,8 +110,14 @@ namespace Google.Protobuf.WellKnownTypes {
       return new Timestamp(this);
     }
 
+    /// <summary>Field number for the "seconds" field.</summary>
     public const int SecondsFieldNumber = 1;
     private long seconds_;
+    /// <summary>
+    ///  Represents seconds of UTC time since Unix epoch
+    ///  1970-01-01T00:00:00Z. Must be from from 0001-01-01T00:00:00Z to
+    ///  9999-12-31T23:59:59Z inclusive.
+    /// </summary>
     public long Seconds {
       get { return seconds_; }
       set {
@@ -76,8 +125,15 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "nanos" field.</summary>
     public const int NanosFieldNumber = 2;
     private int nanos_;
+    /// <summary>
+    ///  Non-negative fractions of a second at nanosecond resolution. Negative
+    ///  second values with fractions must still have non-negative nanos values
+    ///  that count forward in time. Must be from 0 to 999,999,999
+    ///  inclusive.
+    /// </summary>
     public int Nanos {
       get { return nanos_; }
       set {
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Type.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Type.cs
index ff2ecc57..3be90853 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Type.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Type.cs
@@ -11,10 +11,12 @@ namespace Google.Protobuf.WellKnownTypes {
 
   namespace Proto {
 
+    /// <summary>Holder for reflection information generated from google/protobuf/type.proto</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Type {
 
       #region Descriptor
+      /// <summary>File descriptor for google/protobuf/type.proto</summary>
       public static pbr::FileDescriptor Descriptor {
         get { return descriptor; }
       }
@@ -23,43 +25,46 @@ namespace Google.Protobuf.WellKnownTypes {
       static Type() {
         byte[] descriptorData = global::System.Convert.FromBase64String(
             string.Concat(
-              "Chpnb29nbGUvcHJvdG9idWYvdHlwZS5wcm90bxIPZ29vZ2xlLnByb3RvYnVm", 
-              "Ghlnb29nbGUvcHJvdG9idWYvYW55LnByb3RvGiRnb29nbGUvcHJvdG9idWYv", 
-              "c291cmNlX2NvbnRleHQucHJvdG8irgEKBFR5cGUSDAoEbmFtZRgBIAEoCRIm", 
-              "CgZmaWVsZHMYAiADKAsyFi5nb29nbGUucHJvdG9idWYuRmllbGQSDgoGb25l", 
-              "b2ZzGAMgAygJEigKB29wdGlvbnMYBCADKAsyFy5nb29nbGUucHJvdG9idWYu", 
-              "T3B0aW9uEjYKDnNvdXJjZV9jb250ZXh0GAUgASgLMh4uZ29vZ2xlLnByb3Rv", 
-              "YnVmLlNvdXJjZUNvbnRleHQimwUKBUZpZWxkEikKBGtpbmQYASABKA4yGy5n", 
-              "b29nbGUucHJvdG9idWYuRmllbGQuS2luZBI3CgtjYXJkaW5hbGl0eRgCIAEo", 
-              "DjIiLmdvb2dsZS5wcm90b2J1Zi5GaWVsZC5DYXJkaW5hbGl0eRIOCgZudW1i", 
-              "ZXIYAyABKAUSDAoEbmFtZRgEIAEoCRIQCgh0eXBlX3VybBgGIAEoCRITCgtv", 
-              "bmVvZl9pbmRleBgHIAEoBRIOCgZwYWNrZWQYCCABKAgSKAoHb3B0aW9ucxgJ", 
-              "IAMoCzIXLmdvb2dsZS5wcm90b2J1Zi5PcHRpb24iuAIKBEtpbmQSEAoMVFlQ", 
-              "RV9VTktOT1dOEAASDwoLVFlQRV9ET1VCTEUQARIOCgpUWVBFX0ZMT0FUEAIS", 
-              "DgoKVFlQRV9JTlQ2NBADEg8KC1RZUEVfVUlOVDY0EAQSDgoKVFlQRV9JTlQz", 
-              "MhAFEhAKDFRZUEVfRklYRUQ2NBAGEhAKDFRZUEVfRklYRUQzMhAHEg0KCVRZ", 
-              "UEVfQk9PTBAIEg8KC1RZUEVfU1RSSU5HEAkSEAoMVFlQRV9NRVNTQUdFEAsS", 
-              "DgoKVFlQRV9CWVRFUxAMEg8KC1RZUEVfVUlOVDMyEA0SDQoJVFlQRV9FTlVN", 
-              "EA4SEQoNVFlQRV9TRklYRUQzMhAPEhEKDVRZUEVfU0ZJWEVENjQQEBIPCgtU", 
-              "WVBFX1NJTlQzMhAREg8KC1RZUEVfU0lOVDY0EBIidAoLQ2FyZGluYWxpdHkS", 
-              "FwoTQ0FSRElOQUxJVFlfVU5LTk9XThAAEhgKFENBUkRJTkFMSVRZX09QVElP", 
-              "TkFMEAESGAoUQ0FSRElOQUxJVFlfUkVRVUlSRUQQAhIYChRDQVJESU5BTElU", 
-              "WV9SRVBFQVRFRBADIqUBCgRFbnVtEgwKBG5hbWUYASABKAkSLQoJZW51bXZh", 
-              "bHVlGAIgAygLMhouZ29vZ2xlLnByb3RvYnVmLkVudW1WYWx1ZRIoCgdvcHRp", 
-              "b25zGAMgAygLMhcuZ29vZ2xlLnByb3RvYnVmLk9wdGlvbhI2Cg5zb3VyY2Vf", 
-              "Y29udGV4dBgEIAEoCzIeLmdvb2dsZS5wcm90b2J1Zi5Tb3VyY2VDb250ZXh0", 
-              "IlMKCUVudW1WYWx1ZRIMCgRuYW1lGAEgASgJEg4KBm51bWJlchgCIAEoBRIo", 
-              "CgdvcHRpb25zGAMgAygLMhcuZ29vZ2xlLnByb3RvYnVmLk9wdGlvbiI7CgZP", 
-              "cHRpb24SDAoEbmFtZRgBIAEoCRIjCgV2YWx1ZRgCIAEoCzIULmdvb2dsZS5w", 
-              "cm90b2J1Zi5BbnlCSQoTY29tLmdvb2dsZS5wcm90b2J1ZkIJVHlwZVByb3Rv", 
-              "UAGiAgNHUEKqAh5Hb29nbGUuUHJvdG9idWYuV2VsbEtub3duVHlwZXNiBnBy", 
-              "b3RvMw=="));
+              "Chpnb29nbGUvcHJvdG9idWYvdHlwZS5wcm90bxIPZ29vZ2xlLnByb3RvYnVm",
+              "Ghlnb29nbGUvcHJvdG9idWYvYW55LnByb3RvGiRnb29nbGUvcHJvdG9idWYv",
+              "c291cmNlX2NvbnRleHQucHJvdG8i1wEKBFR5cGUSDAoEbmFtZRgBIAEoCRIm",
+              "CgZmaWVsZHMYAiADKAsyFi5nb29nbGUucHJvdG9idWYuRmllbGQSDgoGb25l",
+              "b2ZzGAMgAygJEigKB29wdGlvbnMYBCADKAsyFy5nb29nbGUucHJvdG9idWYu",
+              "T3B0aW9uEjYKDnNvdXJjZV9jb250ZXh0GAUgASgLMh4uZ29vZ2xlLnByb3Rv",
+              "YnVmLlNvdXJjZUNvbnRleHQSJwoGc3ludGF4GAYgASgOMhcuZ29vZ2xlLnBy",
+              "b3RvYnVmLlN5bnRheCK+BQoFRmllbGQSKQoEa2luZBgBIAEoDjIbLmdvb2ds",
+              "ZS5wcm90b2J1Zi5GaWVsZC5LaW5kEjcKC2NhcmRpbmFsaXR5GAIgASgOMiIu",
+              "Z29vZ2xlLnByb3RvYnVmLkZpZWxkLkNhcmRpbmFsaXR5Eg4KBm51bWJlchgD",
+              "IAEoBRIMCgRuYW1lGAQgASgJEhAKCHR5cGVfdXJsGAYgASgJEhMKC29uZW9m",
+              "X2luZGV4GAcgASgFEg4KBnBhY2tlZBgIIAEoCBIoCgdvcHRpb25zGAkgAygL",
+              "MhcuZ29vZ2xlLnByb3RvYnVmLk9wdGlvbhIRCglqc29uX25hbWUYCiABKAki",
+              "yAIKBEtpbmQSEAoMVFlQRV9VTktOT1dOEAASDwoLVFlQRV9ET1VCTEUQARIO",
+              "CgpUWVBFX0ZMT0FUEAISDgoKVFlQRV9JTlQ2NBADEg8KC1RZUEVfVUlOVDY0",
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+              "RklYRUQzMhAHEg0KCVRZUEVfQk9PTBAIEg8KC1RZUEVfU1RSSU5HEAkSDgoK",
+              "VFlQRV9HUk9VUBAKEhAKDFRZUEVfTUVTU0FHRRALEg4KClRZUEVfQllURVMQ",
+              "DBIPCgtUWVBFX1VJTlQzMhANEg0KCVRZUEVfRU5VTRAOEhEKDVRZUEVfU0ZJ",
+              "WEVEMzIQDxIRCg1UWVBFX1NGSVhFRDY0EBASDwoLVFlQRV9TSU5UMzIQERIP",
+              "CgtUWVBFX1NJTlQ2NBASInQKC0NhcmRpbmFsaXR5EhcKE0NBUkRJTkFMSVRZ",
+              "X1VOS05PV04QABIYChRDQVJESU5BTElUWV9PUFRJT05BTBABEhgKFENBUkRJ",
+              "TkFMSVRZX1JFUVVJUkVEEAISGAoUQ0FSRElOQUxJVFlfUkVQRUFURUQQAyLO",
+              "AQoERW51bRIMCgRuYW1lGAEgASgJEi0KCWVudW12YWx1ZRgCIAMoCzIaLmdv",
+              "b2dsZS5wcm90b2J1Zi5FbnVtVmFsdWUSKAoHb3B0aW9ucxgDIAMoCzIXLmdv",
+              "b2dsZS5wcm90b2J1Zi5PcHRpb24SNgoOc291cmNlX2NvbnRleHQYBCABKAsy",
+              "Hi5nb29nbGUucHJvdG9idWYuU291cmNlQ29udGV4dBInCgZzeW50YXgYBSAB",
+              "KA4yFy5nb29nbGUucHJvdG9idWYuU3ludGF4IlMKCUVudW1WYWx1ZRIMCgRu",
+              "YW1lGAEgASgJEg4KBm51bWJlchgCIAEoBRIoCgdvcHRpb25zGAMgAygLMhcu",
+              "Z29vZ2xlLnByb3RvYnVmLk9wdGlvbiI7CgZPcHRpb24SDAoEbmFtZRgBIAEo",
+              "CRIjCgV2YWx1ZRgCIAEoCzIULmdvb2dsZS5wcm90b2J1Zi5BbnkqLgoGU3lu",
+              "dGF4EhEKDVNZTlRBWF9QUk9UTzIQABIRCg1TWU5UQVhfUFJPVE8zEAFCTAoT",
+              "Y29tLmdvb2dsZS5wcm90b2J1ZkIJVHlwZVByb3RvUAGgAQGiAgNHUEKqAh5H",
+              "b29nbGUuUHJvdG9idWYuV2VsbEtub3duVHlwZXNiBnByb3RvMw=="));
         descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
             new pbr::FileDescriptor[] { global::Google.Protobuf.WellKnownTypes.Proto.Any.Descriptor, global::Google.Protobuf.WellKnownTypes.Proto.SourceContext.Descriptor, },
-            new pbr::GeneratedCodeInfo(null, new pbr::GeneratedCodeInfo[] {
-              new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.Type), new[]{ "Name", "Fields", "Oneofs", "Options", "SourceContext" }, null, null, null),
-              new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.Field), new[]{ "Kind", "Cardinality", "Number", "Name", "TypeUrl", "OneofIndex", "Packed", "Options" }, null, new[]{ typeof(global::Google.Protobuf.WellKnownTypes.Field.Types.Kind), typeof(global::Google.Protobuf.WellKnownTypes.Field.Types.Cardinality) }, null),
-              new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.Enum), new[]{ "Name", "Enumvalue", "Options", "SourceContext" }, null, null, null),
+            new pbr::GeneratedCodeInfo(new[] {typeof(global::Google.Protobuf.WellKnownTypes.Syntax), }, new pbr::GeneratedCodeInfo[] {
+              new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.Type), new[]{ "Name", "Fields", "Oneofs", "Options", "SourceContext", "Syntax" }, null, null, null),
+              new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.Field), new[]{ "Kind", "Cardinality", "Number", "Name", "TypeUrl", "OneofIndex", "Packed", "Options", "JsonName" }, null, new[]{ typeof(global::Google.Protobuf.WellKnownTypes.Field.Types.Kind), typeof(global::Google.Protobuf.WellKnownTypes.Field.Types.Cardinality) }, null),
+              new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.Enum), new[]{ "Name", "Enumvalue", "Options", "SourceContext", "Syntax" }, null, null, null),
               new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.EnumValue), new[]{ "Name", "Number", "Options" }, null, null, null),
               new pbr::GeneratedCodeInfo(typeof(global::Google.Protobuf.WellKnownTypes.Option), new[]{ "Name", "Value" }, null, null, null)
             }));
@@ -68,7 +73,27 @@ namespace Google.Protobuf.WellKnownTypes {
 
     }
   }
+  #region Enums
+  /// <summary>
+  ///  Syntax specifies the syntax in which a service element was defined.
+  /// </summary>
+  public enum Syntax {
+    /// <summary>
+    ///  Syntax "proto2"
+    /// </summary>
+    SYNTAX_PROTO2 = 0,
+    /// <summary>
+    ///  Syntax "proto3"
+    /// </summary>
+    SYNTAX_PROTO3 = 1,
+  }
+
+  #endregion
+
   #region Messages
+  /// <summary>
+  ///  A light-weight descriptor for a proto message type.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Type : pb::IMessage<Type> {
     private static readonly pb::MessageParser<Type> _parser = new pb::MessageParser<Type>(() => new Type());
@@ -94,14 +119,19 @@ namespace Google.Protobuf.WellKnownTypes {
       oneofs_ = other.oneofs_.Clone();
       options_ = other.options_.Clone();
       SourceContext = other.sourceContext_ != null ? other.SourceContext.Clone() : null;
+      syntax_ = other.syntax_;
     }
 
     public Type Clone() {
       return new Type(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
+    /// <summary>
+    ///  The fully qualified message name.
+    /// </summary>
     public string Name {
       get { return name_; }
       set {
@@ -109,32 +139,48 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "fields" field.</summary>
     public const int FieldsFieldNumber = 2;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Field> _repeated_fields_codec
         = pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.Field.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Field> fields_ = new pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Field>();
+    /// <summary>
+    ///  The list of fields.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Field> Fields {
       get { return fields_; }
     }
 
+    /// <summary>Field number for the "oneofs" field.</summary>
     public const int OneofsFieldNumber = 3;
     private static readonly pb::FieldCodec<string> _repeated_oneofs_codec
         = pb::FieldCodec.ForString(26);
     private readonly pbc::RepeatedField<string> oneofs_ = new pbc::RepeatedField<string>();
+    /// <summary>
+    ///  The list of oneof definitions.
+    /// </summary>
     public pbc::RepeatedField<string> Oneofs {
       get { return oneofs_; }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 4;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Option> _repeated_options_codec
         = pb::FieldCodec.ForMessage(34, global::Google.Protobuf.WellKnownTypes.Option.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option> options_ = new pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option>();
+    /// <summary>
+    ///  The proto options.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option> Options {
       get { return options_; }
     }
 
+    /// <summary>Field number for the "source_context" field.</summary>
     public const int SourceContextFieldNumber = 5;
     private global::Google.Protobuf.WellKnownTypes.SourceContext sourceContext_;
+    /// <summary>
+    ///  The source context.
+    /// </summary>
     public global::Google.Protobuf.WellKnownTypes.SourceContext SourceContext {
       get { return sourceContext_; }
       set {
@@ -142,6 +188,19 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "syntax" field.</summary>
+    public const int SyntaxFieldNumber = 6;
+    private global::Google.Protobuf.WellKnownTypes.Syntax syntax_ = global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2;
+    /// <summary>
+    ///  The source syntax.
+    /// </summary>
+    public global::Google.Protobuf.WellKnownTypes.Syntax Syntax {
+      get { return syntax_; }
+      set {
+        syntax_ = value;
+      }
+    }
+
     public override bool Equals(object other) {
       return Equals(other as Type);
     }
@@ -158,6 +217,7 @@ namespace Google.Protobuf.WellKnownTypes {
       if(!oneofs_.Equals(other.oneofs_)) return false;
       if(!options_.Equals(other.options_)) return false;
       if (!object.Equals(SourceContext, other.SourceContext)) return false;
+      if (Syntax != other.Syntax) return false;
       return true;
     }
 
@@ -168,6 +228,7 @@ namespace Google.Protobuf.WellKnownTypes {
       hash ^= oneofs_.GetHashCode();
       hash ^= options_.GetHashCode();
       if (sourceContext_ != null) hash ^= SourceContext.GetHashCode();
+      if (Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) hash ^= Syntax.GetHashCode();
       return hash;
     }
 
@@ -187,6 +248,10 @@ namespace Google.Protobuf.WellKnownTypes {
         output.WriteRawTag(42);
         output.WriteMessage(SourceContext);
       }
+      if (Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) {
+        output.WriteRawTag(48);
+        output.WriteEnum((int) Syntax);
+      }
     }
 
     public int CalculateSize() {
@@ -200,6 +265,9 @@ namespace Google.Protobuf.WellKnownTypes {
       if (sourceContext_ != null) {
         size += 1 + pb::CodedOutputStream.ComputeMessageSize(SourceContext);
       }
+      if (Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) {
+        size += 1 + pb::CodedOutputStream.ComputeEnumSize((int) Syntax);
+      }
       return size;
     }
 
@@ -219,6 +287,9 @@ namespace Google.Protobuf.WellKnownTypes {
         }
         SourceContext.MergeFrom(other.SourceContext);
       }
+      if (other.Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) {
+        Syntax = other.Syntax;
+      }
     }
 
     public void MergeFrom(pb::CodedInputStream input) {
@@ -251,12 +322,19 @@ namespace Google.Protobuf.WellKnownTypes {
             input.ReadMessage(sourceContext_);
             break;
           }
+          case 48: {
+            syntax_ = (global::Google.Protobuf.WellKnownTypes.Syntax) input.ReadEnum();
+            break;
+          }
         }
       }
     }
 
   }
 
+  /// <summary>
+  ///  Field represents a single field of a message type.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Field : pb::IMessage<Field> {
     private static readonly pb::MessageParser<Field> _parser = new pb::MessageParser<Field>(() => new Field());
@@ -285,14 +363,19 @@ namespace Google.Protobuf.WellKnownTypes {
       oneofIndex_ = other.oneofIndex_;
       packed_ = other.packed_;
       options_ = other.options_.Clone();
+      jsonName_ = other.jsonName_;
     }
 
     public Field Clone() {
       return new Field(this);
     }
 
+    /// <summary>Field number for the "kind" field.</summary>
     public const int KindFieldNumber = 1;
     private global::Google.Protobuf.WellKnownTypes.Field.Types.Kind kind_ = global::Google.Protobuf.WellKnownTypes.Field.Types.Kind.TYPE_UNKNOWN;
+    /// <summary>
+    ///  The field kind.
+    /// </summary>
     public global::Google.Protobuf.WellKnownTypes.Field.Types.Kind Kind {
       get { return kind_; }
       set {
@@ -300,8 +383,12 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "cardinality" field.</summary>
     public const int CardinalityFieldNumber = 2;
     private global::Google.Protobuf.WellKnownTypes.Field.Types.Cardinality cardinality_ = global::Google.Protobuf.WellKnownTypes.Field.Types.Cardinality.CARDINALITY_UNKNOWN;
+    /// <summary>
+    ///  The field cardinality, i.e. optional/required/repeated.
+    /// </summary>
     public global::Google.Protobuf.WellKnownTypes.Field.Types.Cardinality Cardinality {
       get { return cardinality_; }
       set {
@@ -309,8 +396,12 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "number" field.</summary>
     public const int NumberFieldNumber = 3;
     private int number_;
+    /// <summary>
+    ///  The proto field number.
+    /// </summary>
     public int Number {
       get { return number_; }
       set {
@@ -318,8 +409,12 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 4;
     private string name_ = "";
+    /// <summary>
+    ///  The field name.
+    /// </summary>
     public string Name {
       get { return name_; }
       set {
@@ -327,8 +422,13 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "type_url" field.</summary>
     public const int TypeUrlFieldNumber = 6;
     private string typeUrl_ = "";
+    /// <summary>
+    ///  The type URL (without the scheme) when the type is MESSAGE or ENUM,
+    ///  such as `type.googleapis.com/google.protobuf.Empty`.
+    /// </summary>
     public string TypeUrl {
       get { return typeUrl_; }
       set {
@@ -336,8 +436,12 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "oneof_index" field.</summary>
     public const int OneofIndexFieldNumber = 7;
     private int oneofIndex_;
+    /// <summary>
+    ///  Index in Type.oneofs. Starts at 1. Zero means no oneof mapping.
+    /// </summary>
     public int OneofIndex {
       get { return oneofIndex_; }
       set {
@@ -345,8 +449,12 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "packed" field.</summary>
     public const int PackedFieldNumber = 8;
     private bool packed_;
+    /// <summary>
+    ///  Whether to use alternative packed wire representation.
+    /// </summary>
     public bool Packed {
       get { return packed_; }
       set {
@@ -354,14 +462,31 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 9;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Option> _repeated_options_codec
         = pb::FieldCodec.ForMessage(74, global::Google.Protobuf.WellKnownTypes.Option.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option> options_ = new pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option>();
+    /// <summary>
+    ///  The proto options.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option> Options {
       get { return options_; }
     }
 
+    /// <summary>Field number for the "json_name" field.</summary>
+    public const int JsonNameFieldNumber = 10;
+    private string jsonName_ = "";
+    /// <summary>
+    ///  The JSON name for this field.
+    /// </summary>
+    public string JsonName {
+      get { return jsonName_; }
+      set {
+        jsonName_ = pb::Preconditions.CheckNotNull(value, "value");
+      }
+    }
+
     public override bool Equals(object other) {
       return Equals(other as Field);
     }
@@ -381,6 +506,7 @@ namespace Google.Protobuf.WellKnownTypes {
       if (OneofIndex != other.OneofIndex) return false;
       if (Packed != other.Packed) return false;
       if(!options_.Equals(other.options_)) return false;
+      if (JsonName != other.JsonName) return false;
       return true;
     }
 
@@ -394,6 +520,7 @@ namespace Google.Protobuf.WellKnownTypes {
       if (OneofIndex != 0) hash ^= OneofIndex.GetHashCode();
       if (Packed != false) hash ^= Packed.GetHashCode();
       hash ^= options_.GetHashCode();
+      if (JsonName.Length != 0) hash ^= JsonName.GetHashCode();
       return hash;
     }
 
@@ -431,6 +558,10 @@ namespace Google.Protobuf.WellKnownTypes {
         output.WriteBool(Packed);
       }
       options_.WriteTo(output, _repeated_options_codec);
+      if (JsonName.Length != 0) {
+        output.WriteRawTag(82);
+        output.WriteString(JsonName);
+      }
     }
 
     public int CalculateSize() {
@@ -457,6 +588,9 @@ namespace Google.Protobuf.WellKnownTypes {
         size += 1 + 1;
       }
       size += options_.CalculateSize(_repeated_options_codec);
+      if (JsonName.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(JsonName);
+      }
       return size;
     }
 
@@ -486,6 +620,9 @@ namespace Google.Protobuf.WellKnownTypes {
         Packed = other.Packed;
       }
       options_.Add(other.options_);
+      if (other.JsonName.Length != 0) {
+        JsonName = other.JsonName;
+      }
     }
 
     public void MergeFrom(pb::CodedInputStream input) {
@@ -527,38 +664,120 @@ namespace Google.Protobuf.WellKnownTypes {
             options_.AddEntriesFrom(input, _repeated_options_codec);
             break;
           }
+          case 82: {
+            JsonName = input.ReadString();
+            break;
+          }
         }
       }
     }
 
     #region Nested types
+    /// <summary>Container for nested types declared in the Field message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     public static partial class Types {
+      /// <summary>
+      ///  Kind represents a basic field type.
+      /// </summary>
       public enum Kind {
+        /// <summary>
+        ///  Field type unknown.
+        /// </summary>
         TYPE_UNKNOWN = 0,
+        /// <summary>
+        ///  Field type double.
+        /// </summary>
         TYPE_DOUBLE = 1,
+        /// <summary>
+        ///  Field type float.
+        /// </summary>
         TYPE_FLOAT = 2,
+        /// <summary>
+        ///  Field type int64.
+        /// </summary>
         TYPE_INT64 = 3,
+        /// <summary>
+        ///  Field type uint64.
+        /// </summary>
         TYPE_UINT64 = 4,
+        /// <summary>
+        ///  Field type int32.
+        /// </summary>
         TYPE_INT32 = 5,
+        /// <summary>
+        ///  Field type fixed64.
+        /// </summary>
         TYPE_FIXED64 = 6,
+        /// <summary>
+        ///  Field type fixed32.
+        /// </summary>
         TYPE_FIXED32 = 7,
+        /// <summary>
+        ///  Field type bool.
+        /// </summary>
         TYPE_BOOL = 8,
+        /// <summary>
+        ///  Field type string.
+        /// </summary>
         TYPE_STRING = 9,
+        /// <summary>
+        ///  Field type group (deprecated proto2 type)
+        /// </summary>
+        TYPE_GROUP = 10,
+        /// <summary>
+        ///  Field type message.
+        /// </summary>
         TYPE_MESSAGE = 11,
+        /// <summary>
+        ///  Field type bytes.
+        /// </summary>
         TYPE_BYTES = 12,
+        /// <summary>
+        ///  Field type uint32.
+        /// </summary>
         TYPE_UINT32 = 13,
+        /// <summary>
+        ///  Field type enum.
+        /// </summary>
         TYPE_ENUM = 14,
+        /// <summary>
+        ///  Field type sfixed32.
+        /// </summary>
         TYPE_SFIXED32 = 15,
+        /// <summary>
+        ///  Field type sfixed64.
+        /// </summary>
         TYPE_SFIXED64 = 16,
+        /// <summary>
+        ///  Field type sint32.
+        /// </summary>
         TYPE_SINT32 = 17,
+        /// <summary>
+        ///  Field type sint64.
+        /// </summary>
         TYPE_SINT64 = 18,
       }
 
+      /// <summary>
+      ///  Cardinality represents whether a field is optional, required, or
+      ///  repeated.
+      /// </summary>
       public enum Cardinality {
+        /// <summary>
+        ///  The field cardinality is unknown. Typically an error condition.
+        /// </summary>
         CARDINALITY_UNKNOWN = 0,
+        /// <summary>
+        ///  For optional fields.
+        /// </summary>
         CARDINALITY_OPTIONAL = 1,
+        /// <summary>
+        ///  For required fields. Not used for proto3.
+        /// </summary>
         CARDINALITY_REQUIRED = 2,
+        /// <summary>
+        ///  For repeated fields.
+        /// </summary>
         CARDINALITY_REPEATED = 3,
       }
 
@@ -567,6 +786,9 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
 
+  /// <summary>
+  ///  Enum type definition.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Enum : pb::IMessage<Enum> {
     private static readonly pb::MessageParser<Enum> _parser = new pb::MessageParser<Enum>(() => new Enum());
@@ -591,14 +813,19 @@ namespace Google.Protobuf.WellKnownTypes {
       enumvalue_ = other.enumvalue_.Clone();
       options_ = other.options_.Clone();
       SourceContext = other.sourceContext_ != null ? other.SourceContext.Clone() : null;
+      syntax_ = other.syntax_;
     }
 
     public Enum Clone() {
       return new Enum(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
+    /// <summary>
+    ///  Enum type name.
+    /// </summary>
     public string Name {
       get { return name_; }
       set {
@@ -606,24 +833,36 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "enumvalue" field.</summary>
     public const int EnumvalueFieldNumber = 2;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.EnumValue> _repeated_enumvalue_codec
         = pb::FieldCodec.ForMessage(18, global::Google.Protobuf.WellKnownTypes.EnumValue.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.EnumValue> enumvalue_ = new pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.EnumValue>();
+    /// <summary>
+    ///  Enum value definitions.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.EnumValue> Enumvalue {
       get { return enumvalue_; }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 3;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Option> _repeated_options_codec
         = pb::FieldCodec.ForMessage(26, global::Google.Protobuf.WellKnownTypes.Option.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option> options_ = new pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option>();
+    /// <summary>
+    ///  Proto options for the enum type.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option> Options {
       get { return options_; }
     }
 
+    /// <summary>Field number for the "source_context" field.</summary>
     public const int SourceContextFieldNumber = 4;
     private global::Google.Protobuf.WellKnownTypes.SourceContext sourceContext_;
+    /// <summary>
+    ///  The source context.
+    /// </summary>
     public global::Google.Protobuf.WellKnownTypes.SourceContext SourceContext {
       get { return sourceContext_; }
       set {
@@ -631,6 +870,19 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "syntax" field.</summary>
+    public const int SyntaxFieldNumber = 5;
+    private global::Google.Protobuf.WellKnownTypes.Syntax syntax_ = global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2;
+    /// <summary>
+    ///  The source syntax.
+    /// </summary>
+    public global::Google.Protobuf.WellKnownTypes.Syntax Syntax {
+      get { return syntax_; }
+      set {
+        syntax_ = value;
+      }
+    }
+
     public override bool Equals(object other) {
       return Equals(other as Enum);
     }
@@ -646,6 +898,7 @@ namespace Google.Protobuf.WellKnownTypes {
       if(!enumvalue_.Equals(other.enumvalue_)) return false;
       if(!options_.Equals(other.options_)) return false;
       if (!object.Equals(SourceContext, other.SourceContext)) return false;
+      if (Syntax != other.Syntax) return false;
       return true;
     }
 
@@ -655,6 +908,7 @@ namespace Google.Protobuf.WellKnownTypes {
       hash ^= enumvalue_.GetHashCode();
       hash ^= options_.GetHashCode();
       if (sourceContext_ != null) hash ^= SourceContext.GetHashCode();
+      if (Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) hash ^= Syntax.GetHashCode();
       return hash;
     }
 
@@ -673,6 +927,10 @@ namespace Google.Protobuf.WellKnownTypes {
         output.WriteRawTag(34);
         output.WriteMessage(SourceContext);
       }
+      if (Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) {
+        output.WriteRawTag(40);
+        output.WriteEnum((int) Syntax);
+      }
     }
 
     public int CalculateSize() {
@@ -685,6 +943,9 @@ namespace Google.Protobuf.WellKnownTypes {
       if (sourceContext_ != null) {
         size += 1 + pb::CodedOutputStream.ComputeMessageSize(SourceContext);
       }
+      if (Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) {
+        size += 1 + pb::CodedOutputStream.ComputeEnumSize((int) Syntax);
+      }
       return size;
     }
 
@@ -703,6 +964,9 @@ namespace Google.Protobuf.WellKnownTypes {
         }
         SourceContext.MergeFrom(other.SourceContext);
       }
+      if (other.Syntax != global::Google.Protobuf.WellKnownTypes.Syntax.SYNTAX_PROTO2) {
+        Syntax = other.Syntax;
+      }
     }
 
     public void MergeFrom(pb::CodedInputStream input) {
@@ -731,12 +995,19 @@ namespace Google.Protobuf.WellKnownTypes {
             input.ReadMessage(sourceContext_);
             break;
           }
+          case 40: {
+            syntax_ = (global::Google.Protobuf.WellKnownTypes.Syntax) input.ReadEnum();
+            break;
+          }
         }
       }
     }
 
   }
 
+  /// <summary>
+  ///  Enum value definition.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class EnumValue : pb::IMessage<EnumValue> {
     private static readonly pb::MessageParser<EnumValue> _parser = new pb::MessageParser<EnumValue>(() => new EnumValue());
@@ -766,8 +1037,12 @@ namespace Google.Protobuf.WellKnownTypes {
       return new EnumValue(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
+    /// <summary>
+    ///  Enum value name.
+    /// </summary>
     public string Name {
       get { return name_; }
       set {
@@ -775,8 +1050,12 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "number" field.</summary>
     public const int NumberFieldNumber = 2;
     private int number_;
+    /// <summary>
+    ///  Enum value number.
+    /// </summary>
     public int Number {
       get { return number_; }
       set {
@@ -784,10 +1063,14 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "options" field.</summary>
     public const int OptionsFieldNumber = 3;
     private static readonly pb::FieldCodec<global::Google.Protobuf.WellKnownTypes.Option> _repeated_options_codec
         = pb::FieldCodec.ForMessage(26, global::Google.Protobuf.WellKnownTypes.Option.Parser);
     private readonly pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option> options_ = new pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option>();
+    /// <summary>
+    ///  Proto options for the enum value.
+    /// </summary>
     public pbc::RepeatedField<global::Google.Protobuf.WellKnownTypes.Option> Options {
       get { return options_; }
     }
@@ -883,6 +1166,9 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
 
+  /// <summary>
+  ///  Proto option attached to messages/fields/enums etc.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Option : pb::IMessage<Option> {
     private static readonly pb::MessageParser<Option> _parser = new pb::MessageParser<Option>(() => new Option());
@@ -911,8 +1197,12 @@ namespace Google.Protobuf.WellKnownTypes {
       return new Option(this);
     }
 
+    /// <summary>Field number for the "name" field.</summary>
     public const int NameFieldNumber = 1;
     private string name_ = "";
+    /// <summary>
+    ///  Proto option name.
+    /// </summary>
     public string Name {
       get { return name_; }
       set {
@@ -920,8 +1210,12 @@ namespace Google.Protobuf.WellKnownTypes {
       }
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 2;
     private global::Google.Protobuf.WellKnownTypes.Any value_;
+    /// <summary>
+    ///  Proto option value.
+    /// </summary>
     public global::Google.Protobuf.WellKnownTypes.Any Value {
       get { return value_; }
       set {
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Wrappers.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Wrappers.cs
index 9ecaf47c..d26395f8 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Wrappers.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Wrappers.cs
@@ -9,10 +9,12 @@ using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
 namespace Google.Protobuf.WellKnownTypes {
 
+  /// <summary>Holder for reflection information generated from google/protobuf/wrappers.proto</summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public static partial class Wrappers {
 
     #region Descriptor
+    /// <summary>File descriptor for google/protobuf/wrappers.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
@@ -21,15 +23,15 @@ namespace Google.Protobuf.WellKnownTypes {
     static Wrappers() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "Ch5nb29nbGUvcHJvdG9idWYvd3JhcHBlcnMucHJvdG8SD2dvb2dsZS5wcm90", 
-            "b2J1ZiIcCgtEb3VibGVWYWx1ZRINCgV2YWx1ZRgBIAEoASIbCgpGbG9hdFZh", 
-            "bHVlEg0KBXZhbHVlGAEgASgCIhsKCkludDY0VmFsdWUSDQoFdmFsdWUYASAB", 
-            "KAMiHAoLVUludDY0VmFsdWUSDQoFdmFsdWUYASABKAQiGwoKSW50MzJWYWx1", 
-            "ZRINCgV2YWx1ZRgBIAEoBSIcCgtVSW50MzJWYWx1ZRINCgV2YWx1ZRgBIAEo", 
-            "DSIaCglCb29sVmFsdWUSDQoFdmFsdWUYASABKAgiHAoLU3RyaW5nVmFsdWUS", 
-            "DQoFdmFsdWUYASABKAkiGwoKQnl0ZXNWYWx1ZRINCgV2YWx1ZRgBIAEoDEJN", 
-            "ChNjb20uZ29vZ2xlLnByb3RvYnVmQg1XcmFwcGVyc1Byb3RvUAGiAgNHUEKq", 
-            "Ah5Hb29nbGUuUHJvdG9idWYuV2VsbEtub3duVHlwZXNiBnByb3RvMw=="));
+            "Ch5nb29nbGUvcHJvdG9idWYvd3JhcHBlcnMucHJvdG8SD2dvb2dsZS5wcm90",
+            "b2J1ZiIcCgtEb3VibGVWYWx1ZRINCgV2YWx1ZRgBIAEoASIbCgpGbG9hdFZh",
+            "bHVlEg0KBXZhbHVlGAEgASgCIhsKCkludDY0VmFsdWUSDQoFdmFsdWUYASAB",
+            "KAMiHAoLVUludDY0VmFsdWUSDQoFdmFsdWUYASABKAQiGwoKSW50MzJWYWx1",
+            "ZRINCgV2YWx1ZRgBIAEoBSIcCgtVSW50MzJWYWx1ZRINCgV2YWx1ZRgBIAEo",
+            "DSIaCglCb29sVmFsdWUSDQoFdmFsdWUYASABKAgiHAoLU3RyaW5nVmFsdWUS",
+            "DQoFdmFsdWUYASABKAkiGwoKQnl0ZXNWYWx1ZRINCgV2YWx1ZRgBIAEoDEJQ",
+            "ChNjb20uZ29vZ2xlLnByb3RvYnVmQg1XcmFwcGVyc1Byb3RvUAGgAQGiAgNH",
+            "UEKqAh5Hb29nbGUuUHJvdG9idWYuV2VsbEtub3duVHlwZXNiBnByb3RvMw=="));
       descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
           new pbr::FileDescriptor[] { },
           new pbr::GeneratedCodeInfo(null, new pbr::GeneratedCodeInfo[] {
@@ -48,6 +50,10 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
   #region Messages
+  /// <summary>
+  ///  Wrapper message for `double`.
+  ///  The JSON representation for `DoubleValue` is JSON number.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class DoubleValue : pb::IMessage<DoubleValue> {
     private static readonly pb::MessageParser<DoubleValue> _parser = new pb::MessageParser<DoubleValue>(() => new DoubleValue());
@@ -75,8 +81,12 @@ namespace Google.Protobuf.WellKnownTypes {
       return new DoubleValue(this);
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 1;
     private double value_;
+    /// <summary>
+    ///  The double value.
+    /// </summary>
     public double Value {
       get { return value_; }
       set {
@@ -150,6 +160,10 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
 
+  /// <summary>
+  ///  Wrapper message for `float`.
+  ///  The JSON representation for `FloatValue` is JSON number.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class FloatValue : pb::IMessage<FloatValue> {
     private static readonly pb::MessageParser<FloatValue> _parser = new pb::MessageParser<FloatValue>(() => new FloatValue());
@@ -177,8 +191,12 @@ namespace Google.Protobuf.WellKnownTypes {
       return new FloatValue(this);
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 1;
     private float value_;
+    /// <summary>
+    ///  The float value.
+    /// </summary>
     public float Value {
       get { return value_; }
       set {
@@ -252,6 +270,10 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
 
+  /// <summary>
+  ///  Wrapper message for `int64`.
+  ///  The JSON representation for `Int64Value` is JSON string.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Int64Value : pb::IMessage<Int64Value> {
     private static readonly pb::MessageParser<Int64Value> _parser = new pb::MessageParser<Int64Value>(() => new Int64Value());
@@ -279,8 +301,12 @@ namespace Google.Protobuf.WellKnownTypes {
       return new Int64Value(this);
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 1;
     private long value_;
+    /// <summary>
+    ///  The int64 value.
+    /// </summary>
     public long Value {
       get { return value_; }
       set {
@@ -354,6 +380,10 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
 
+  /// <summary>
+  ///  Wrapper message for `uint64`.
+  ///  The JSON representation for `UInt64Value` is JSON string.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class UInt64Value : pb::IMessage<UInt64Value> {
     private static readonly pb::MessageParser<UInt64Value> _parser = new pb::MessageParser<UInt64Value>(() => new UInt64Value());
@@ -381,8 +411,12 @@ namespace Google.Protobuf.WellKnownTypes {
       return new UInt64Value(this);
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 1;
     private ulong value_;
+    /// <summary>
+    ///  The uint64 value.
+    /// </summary>
     public ulong Value {
       get { return value_; }
       set {
@@ -456,6 +490,10 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
 
+  /// <summary>
+  ///  Wrapper message for `int32`.
+  ///  The JSON representation for `Int32Value` is JSON number.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class Int32Value : pb::IMessage<Int32Value> {
     private static readonly pb::MessageParser<Int32Value> _parser = new pb::MessageParser<Int32Value>(() => new Int32Value());
@@ -483,8 +521,12 @@ namespace Google.Protobuf.WellKnownTypes {
       return new Int32Value(this);
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 1;
     private int value_;
+    /// <summary>
+    ///  The int32 value.
+    /// </summary>
     public int Value {
       get { return value_; }
       set {
@@ -558,6 +600,10 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
 
+  /// <summary>
+  ///  Wrapper message for `uint32`.
+  ///  The JSON representation for `UInt32Value` is JSON number.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class UInt32Value : pb::IMessage<UInt32Value> {
     private static readonly pb::MessageParser<UInt32Value> _parser = new pb::MessageParser<UInt32Value>(() => new UInt32Value());
@@ -585,8 +631,12 @@ namespace Google.Protobuf.WellKnownTypes {
       return new UInt32Value(this);
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 1;
     private uint value_;
+    /// <summary>
+    ///  The uint32 value.
+    /// </summary>
     public uint Value {
       get { return value_; }
       set {
@@ -660,6 +710,10 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
 
+  /// <summary>
+  ///  Wrapper message for `bool`.
+  ///  The JSON representation for `BoolValue` is JSON `true` and `false`.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class BoolValue : pb::IMessage<BoolValue> {
     private static readonly pb::MessageParser<BoolValue> _parser = new pb::MessageParser<BoolValue>(() => new BoolValue());
@@ -687,8 +741,12 @@ namespace Google.Protobuf.WellKnownTypes {
       return new BoolValue(this);
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 1;
     private bool value_;
+    /// <summary>
+    ///  The bool value.
+    /// </summary>
     public bool Value {
       get { return value_; }
       set {
@@ -762,6 +820,10 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
 
+  /// <summary>
+  ///  Wrapper message for `string`.
+  ///  The JSON representation for `StringValue` is JSON string.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class StringValue : pb::IMessage<StringValue> {
     private static readonly pb::MessageParser<StringValue> _parser = new pb::MessageParser<StringValue>(() => new StringValue());
@@ -789,8 +851,12 @@ namespace Google.Protobuf.WellKnownTypes {
       return new StringValue(this);
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 1;
     private string value_ = "";
+    /// <summary>
+    ///  The string value.
+    /// </summary>
     public string Value {
       get { return value_; }
       set {
@@ -864,6 +930,10 @@ namespace Google.Protobuf.WellKnownTypes {
 
   }
 
+  /// <summary>
+  ///  Wrapper message for `bytes`.
+  ///  The JSON representation for `BytesValue` is JSON string.
+  /// </summary>
   [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
   public sealed partial class BytesValue : pb::IMessage<BytesValue> {
     private static readonly pb::MessageParser<BytesValue> _parser = new pb::MessageParser<BytesValue>(() => new BytesValue());
@@ -891,8 +961,12 @@ namespace Google.Protobuf.WellKnownTypes {
       return new BytesValue(this);
     }
 
+    /// <summary>Field number for the "value" field.</summary>
     public const int ValueFieldNumber = 1;
     private pb::ByteString value_ = pb::ByteString.Empty;
+    /// <summary>
+    ///  The bytes value.
+    /// </summary>
     public pb::ByteString Value {
       get { return value_; }
       set {
diff --git a/generate_descriptor_proto.sh b/generate_descriptor_proto.sh
index b6e6e07b..cd906896 100755
--- a/generate_descriptor_proto.sh
+++ b/generate_descriptor_proto.sh
@@ -92,3 +92,8 @@ do
   PROCESS_ROUND=$((PROCESS_ROUND + 1))
 done
 cd ..
+
+if test -x objectivec/generate_descriptors_proto.sh; then
+  echo "Generating messages for objc."
+  objectivec/generate_descriptors_proto.sh $@
+fi
diff --git a/objectivec/DevTools/full_mac_build.sh b/objectivec/DevTools/full_mac_build.sh
index 2192b760..c38fce7c 100755
--- a/objectivec/DevTools/full_mac_build.sh
+++ b/objectivec/DevTools/full_mac_build.sh
@@ -202,9 +202,9 @@ if [[ "${DO_XCODE_IOS_TESTS}" == "yes" ]] ; then
       # Don't need to worry about form factors or retina/non retina;
       # just pick a mix of OS Versions and 32/64 bit.
       -destination "platform=iOS Simulator,name=iPhone 4s,OS=7.1" # 32bit
-      -destination "platform=iOS Simulator,name=iPhone 6,OS=8.3" # 64bit
+      -destination "platform=iOS Simulator,name=iPhone 6,OS=8.4" # 64bit
       -destination "platform=iOS Simulator,name=iPad 2,OS=7.1" # 32bit
-      -destination "platform=iOS Simulator,name=iPad Air,OS=8.3" # 64bit
+      -destination "platform=iOS Simulator,name=iPad Air,OS=8.4" # 64bit
   )
   header "Doing Xcode iOS build/tests - Debug"
   "${XCODEBUILD_TEST_BASE_IOS[@]}" -configuration Debug test
diff --git a/objectivec/GPBBootstrap.h b/objectivec/GPBBootstrap.h
index 3dd2de83..c49c7e20 100644
--- a/objectivec/GPBBootstrap.h
+++ b/objectivec/GPBBootstrap.h
@@ -46,12 +46,20 @@
 
 // Used in the generated code to give sizes to enums. int32_t was chosen based
 // on the fact that Protocol Buffers enums are limited to this range.
-// The complexity and double definition here are so we get the nice name
-// for objective C, but also define the name with a trailing underscore so
-// the Swift bridge will have one where the names line up to support short
-// names since they are scoped to the enum.
-// https://developer.apple.com/library/ios/documentation/Swift/Conceptual/BuildingCocoaApps/InteractingWithCAPIs.html#//apple_ref/doc/uid/TP40014216-CH8-XID_11
-#define GPB_ENUM(X) NS_ENUM(int32_t, X)
+#if !__has_feature(objc_fixed_enum)
+ #error All supported Xcode versions should support objc_fixed_enum.
+#endif
+// If the headers are imported into Objective-C++, we can run into an issue
+// where the defintion of NS_ENUM (really CF_ENUM) changes based on the C++
+// standard that is in effect.  If it isn't C++11 or higher, the definition
+// doesn't allow us to forward declare. We work around this one case by
+// providing a local definition. The default case has to use NS_ENUM for the
+// magic that is Swift bridging of enums.
+#if (__cplusplus && __cplusplus < 201103L)
+ #define GPB_ENUM(X) enum X : int32_t X; enum X : int32_t
+#else
+ #define GPB_ENUM(X) NS_ENUM(int32_t, X)
+#endif
 // GPB_ENUM_FWD_DECLARE is used for forward declaring enums, ex:
 //   GPB_ENUM_FWD_DECLARE(Foo_Enum)
 //   @property (nonatomic) Foo_Enum value;
diff --git a/objectivec/GPBDictionary.h b/objectivec/GPBDictionary.h
index cc4a698a..6961cfc3 100644
--- a/objectivec/GPBDictionary.h
+++ b/objectivec/GPBDictionary.h
@@ -360,30 +360,30 @@ NS_ASSUME_NONNULL_BEGIN
 @property(nonatomic, readonly) NSUInteger count;
 
 + (instancetype)dictionary;
-+ (instancetype)dictionaryWithValue:(id)value
-                             forKey:(uint32_t)key;
-+ (instancetype)dictionaryWithValues:(const id GPB_UNSAFE_UNRETAINED [])values
-                             forKeys:(const uint32_t [])keys
-                               count:(NSUInteger)count;
++ (instancetype)dictionaryWithObject:(id)object
+                              forKey:(uint32_t)key;
++ (instancetype)dictionaryWithObjects:(const id GPB_UNSAFE_UNRETAINED [])objects
+                              forKeys:(const uint32_t [])keys
+                                count:(NSUInteger)count;
 + (instancetype)dictionaryWithDictionary:(GPBUInt32ObjectDictionary *)dictionary;
 + (instancetype)dictionaryWithCapacity:(NSUInteger)numItems;
 
-- (instancetype)initWithValues:(const id GPB_UNSAFE_UNRETAINED [])values
-                       forKeys:(const uint32_t [])keys
-                         count:(NSUInteger)count NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithObjects:(const id GPB_UNSAFE_UNRETAINED [])objects
+                        forKeys:(const uint32_t [])keys
+                          count:(NSUInteger)count NS_DESIGNATED_INITIALIZER;
 - (instancetype)initWithDictionary:(GPBUInt32ObjectDictionary *)dictionary;
 - (instancetype)initWithCapacity:(NSUInteger)numItems;
 
-- (id)valueForKey:(uint32_t)key;
+- (id)objectForKey:(uint32_t)key;
 
-- (void)enumerateKeysAndValuesUsingBlock:
-    (void (^)(uint32_t key, id value, BOOL *stop))block;
+- (void)enumerateKeysAndObjectsUsingBlock:
+    (void (^)(uint32_t key, id object, BOOL *stop))block;
 
 - (void)addEntriesFromDictionary:(GPBUInt32ObjectDictionary *)otherDictionary;
 
-- (void)setValue:(id)value forKey:(uint32_t)key;
+- (void)setObject:(id)object forKey:(uint32_t)key;
 
-- (void)removeValueForKey:(uint32_t)aKey;
+- (void)removeObjectForKey:(uint32_t)aKey;
 - (void)removeAll;
 
 @end
@@ -706,30 +706,30 @@ NS_ASSUME_NONNULL_BEGIN
 @property(nonatomic, readonly) NSUInteger count;
 
 + (instancetype)dictionary;
-+ (instancetype)dictionaryWithValue:(id)value
-                             forKey:(int32_t)key;
-+ (instancetype)dictionaryWithValues:(const id GPB_UNSAFE_UNRETAINED [])values
-                             forKeys:(const int32_t [])keys
-                               count:(NSUInteger)count;
++ (instancetype)dictionaryWithObject:(id)object
+                              forKey:(int32_t)key;
++ (instancetype)dictionaryWithObjects:(const id GPB_UNSAFE_UNRETAINED [])objects
+                              forKeys:(const int32_t [])keys
+                                count:(NSUInteger)count;
 + (instancetype)dictionaryWithDictionary:(GPBInt32ObjectDictionary *)dictionary;
 + (instancetype)dictionaryWithCapacity:(NSUInteger)numItems;
 
-- (instancetype)initWithValues:(const id GPB_UNSAFE_UNRETAINED [])values
-                       forKeys:(const int32_t [])keys
-                         count:(NSUInteger)count NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithObjects:(const id GPB_UNSAFE_UNRETAINED [])objects
+                        forKeys:(const int32_t [])keys
+                          count:(NSUInteger)count NS_DESIGNATED_INITIALIZER;
 - (instancetype)initWithDictionary:(GPBInt32ObjectDictionary *)dictionary;
 - (instancetype)initWithCapacity:(NSUInteger)numItems;
 
-- (id)valueForKey:(int32_t)key;
+- (id)objectForKey:(int32_t)key;
 
-- (void)enumerateKeysAndValuesUsingBlock:
-    (void (^)(int32_t key, id value, BOOL *stop))block;
+- (void)enumerateKeysAndObjectsUsingBlock:
+    (void (^)(int32_t key, id object, BOOL *stop))block;
 
 - (void)addEntriesFromDictionary:(GPBInt32ObjectDictionary *)otherDictionary;
 
-- (void)setValue:(id)value forKey:(int32_t)key;
+- (void)setObject:(id)object forKey:(int32_t)key;
 
-- (void)removeValueForKey:(int32_t)aKey;
+- (void)removeObjectForKey:(int32_t)aKey;
 - (void)removeAll;
 
 @end
@@ -1052,30 +1052,30 @@ NS_ASSUME_NONNULL_BEGIN
 @property(nonatomic, readonly) NSUInteger count;
 
 + (instancetype)dictionary;
-+ (instancetype)dictionaryWithValue:(id)value
-                             forKey:(uint64_t)key;
-+ (instancetype)dictionaryWithValues:(const id GPB_UNSAFE_UNRETAINED [])values
-                             forKeys:(const uint64_t [])keys
-                               count:(NSUInteger)count;
++ (instancetype)dictionaryWithObject:(id)object
+                              forKey:(uint64_t)key;
++ (instancetype)dictionaryWithObjects:(const id GPB_UNSAFE_UNRETAINED [])objects
+                              forKeys:(const uint64_t [])keys
+                                count:(NSUInteger)count;
 + (instancetype)dictionaryWithDictionary:(GPBUInt64ObjectDictionary *)dictionary;
 + (instancetype)dictionaryWithCapacity:(NSUInteger)numItems;
 
-- (instancetype)initWithValues:(const id GPB_UNSAFE_UNRETAINED [])values
-                       forKeys:(const uint64_t [])keys
-                         count:(NSUInteger)count NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithObjects:(const id GPB_UNSAFE_UNRETAINED [])objects
+                        forKeys:(const uint64_t [])keys
+                          count:(NSUInteger)count NS_DESIGNATED_INITIALIZER;
 - (instancetype)initWithDictionary:(GPBUInt64ObjectDictionary *)dictionary;
 - (instancetype)initWithCapacity:(NSUInteger)numItems;
 
-- (id)valueForKey:(uint64_t)key;
+- (id)objectForKey:(uint64_t)key;
 
-- (void)enumerateKeysAndValuesUsingBlock:
-    (void (^)(uint64_t key, id value, BOOL *stop))block;
+- (void)enumerateKeysAndObjectsUsingBlock:
+    (void (^)(uint64_t key, id object, BOOL *stop))block;
 
 - (void)addEntriesFromDictionary:(GPBUInt64ObjectDictionary *)otherDictionary;
 
-- (void)setValue:(id)value forKey:(uint64_t)key;
+- (void)setObject:(id)object forKey:(uint64_t)key;
 
-- (void)removeValueForKey:(uint64_t)aKey;
+- (void)removeObjectForKey:(uint64_t)aKey;
 - (void)removeAll;
 
 @end
@@ -1398,30 +1398,30 @@ NS_ASSUME_NONNULL_BEGIN
 @property(nonatomic, readonly) NSUInteger count;
 
 + (instancetype)dictionary;
-+ (instancetype)dictionaryWithValue:(id)value
-                             forKey:(int64_t)key;
-+ (instancetype)dictionaryWithValues:(const id GPB_UNSAFE_UNRETAINED [])values
-                             forKeys:(const int64_t [])keys
-                               count:(NSUInteger)count;
++ (instancetype)dictionaryWithObject:(id)object
+                              forKey:(int64_t)key;
++ (instancetype)dictionaryWithObjects:(const id GPB_UNSAFE_UNRETAINED [])objects
+                              forKeys:(const int64_t [])keys
+                                count:(NSUInteger)count;
 + (instancetype)dictionaryWithDictionary:(GPBInt64ObjectDictionary *)dictionary;
 + (instancetype)dictionaryWithCapacity:(NSUInteger)numItems;
 
-- (instancetype)initWithValues:(const id GPB_UNSAFE_UNRETAINED [])values
-                       forKeys:(const int64_t [])keys
-                         count:(NSUInteger)count NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithObjects:(const id GPB_UNSAFE_UNRETAINED [])objects
+                        forKeys:(const int64_t [])keys
+                          count:(NSUInteger)count NS_DESIGNATED_INITIALIZER;
 - (instancetype)initWithDictionary:(GPBInt64ObjectDictionary *)dictionary;
 - (instancetype)initWithCapacity:(NSUInteger)numItems;
 
-- (id)valueForKey:(int64_t)key;
+- (id)objectForKey:(int64_t)key;
 
-- (void)enumerateKeysAndValuesUsingBlock:
-    (void (^)(int64_t key, id value, BOOL *stop))block;
+- (void)enumerateKeysAndObjectsUsingBlock:
+    (void (^)(int64_t key, id object, BOOL *stop))block;
 
 - (void)addEntriesFromDictionary:(GPBInt64ObjectDictionary *)otherDictionary;
 
-- (void)setValue:(id)value forKey:(int64_t)key;
+- (void)setObject:(id)object forKey:(int64_t)key;
 
-- (void)removeValueForKey:(int64_t)aKey;
+- (void)removeObjectForKey:(int64_t)aKey;
 - (void)removeAll;
 
 @end
@@ -1744,30 +1744,30 @@ NS_ASSUME_NONNULL_BEGIN
 @property(nonatomic, readonly) NSUInteger count;
 
 + (instancetype)dictionary;
-+ (instancetype)dictionaryWithValue:(id)value
-                             forKey:(BOOL)key;
-+ (instancetype)dictionaryWithValues:(const id GPB_UNSAFE_UNRETAINED [])values
-                             forKeys:(const BOOL [])keys
-                               count:(NSUInteger)count;
++ (instancetype)dictionaryWithObject:(id)object
+                              forKey:(BOOL)key;
++ (instancetype)dictionaryWithObjects:(const id GPB_UNSAFE_UNRETAINED [])objects
+                              forKeys:(const BOOL [])keys
+                                count:(NSUInteger)count;
 + (instancetype)dictionaryWithDictionary:(GPBBoolObjectDictionary *)dictionary;
 + (instancetype)dictionaryWithCapacity:(NSUInteger)numItems;
 
-- (instancetype)initWithValues:(const id GPB_UNSAFE_UNRETAINED [])values
-                       forKeys:(const BOOL [])keys
-                         count:(NSUInteger)count NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithObjects:(const id GPB_UNSAFE_UNRETAINED [])objects
+                        forKeys:(const BOOL [])keys
+                          count:(NSUInteger)count NS_DESIGNATED_INITIALIZER;
 - (instancetype)initWithDictionary:(GPBBoolObjectDictionary *)dictionary;
 - (instancetype)initWithCapacity:(NSUInteger)numItems;
 
-- (id)valueForKey:(BOOL)key;
+- (id)objectForKey:(BOOL)key;
 
-- (void)enumerateKeysAndValuesUsingBlock:
-    (void (^)(BOOL key, id value, BOOL *stop))block;
+- (void)enumerateKeysAndObjectsUsingBlock:
+    (void (^)(BOOL key, id object, BOOL *stop))block;
 
 - (void)addEntriesFromDictionary:(GPBBoolObjectDictionary *)otherDictionary;
 
-- (void)setValue:(id)value forKey:(BOOL)key;
+- (void)setObject:(id)object forKey:(BOOL)key;
 
-- (void)removeValueForKey:(BOOL)aKey;
+- (void)removeObjectForKey:(BOOL)aKey;
 - (void)removeAll;
 
 @end
@@ -2107,13 +2107,13 @@ NS_ASSUME_NONNULL_END
 //%DICTIONARY_KEY_TO_POD_INTERFACE(KEY_NAME, KEY_TYPE, KisP, KHELPER, Double, double)
 //%DICTIONARY_KEY_TO_ENUM_INTERFACE(KEY_NAME, KEY_TYPE, KisP, KHELPER, Enum, int32_t)
 //%PDDM-DEFINE DICTIONARY_KEY_TO_POD_INTERFACE(KEY_NAME, KEY_TYPE, KisP, KHELPER, VALUE_NAME, VALUE_TYPE)
-//%DICTIONARY_COMMON_INTERFACE(KEY_NAME, KEY_TYPE, KisP, KHELPER, VALUE_NAME, VALUE_TYPE, POD)
+//%DICTIONARY_COMMON_INTERFACE(KEY_NAME, KEY_TYPE, KisP, KHELPER, VALUE_NAME, VALUE_TYPE, POD, value)
 //%PDDM-DEFINE DICTIONARY_POD_KEY_TO_OBJECT_INTERFACE(KEY_NAME, KEY_TYPE, VALUE_NAME, VALUE_TYPE)
-//%DICTIONARY_COMMON_INTERFACE(KEY_NAME, KEY_TYPE, , POD, VALUE_NAME, VALUE_TYPE, OBJECT)
+//%DICTIONARY_COMMON_INTERFACE(KEY_NAME, KEY_TYPE, , POD, VALUE_NAME, VALUE_TYPE, OBJECT, object)
 //%PDDM-DEFINE VALUE_FOR_KEY_POD(KEY_TYPE, VALUE_TYPE)
 //%- (BOOL)valueForKey:(KEY_TYPE)key value:(nullable VALUE_TYPE *)value;
 //%PDDM-DEFINE VALUE_FOR_KEY_OBJECT(KEY_TYPE, VALUE_TYPE)
-//%- (VALUE_TYPE)valueForKey:(KEY_TYPE)key;
+//%- (VALUE_TYPE)objectForKey:(KEY_TYPE)key;
 //%PDDM-DEFINE VALUE_FOR_KEY_Enum(KEY_TYPE, VALUE_TYPE)
 //%VALUE_FOR_KEY_POD(KEY_TYPE, VALUE_TYPE)
 //%PDDM-DEFINE ARRAY_ARG_MODIFIERPOD()
@@ -2122,7 +2122,7 @@ NS_ASSUME_NONNULL_END
 // Nothing
 //%PDDM-DEFINE ARRAY_ARG_MODIFIEROBJECT()
 //%GPB_UNSAFE_UNRETAINED ##
-//%PDDM-DEFINE DICTIONARY_COMMON_INTERFACE(KEY_NAME, KEY_TYPE, KisP, KHELPER, VALUE_NAME, VALUE_TYPE, VHELPER)
+//%PDDM-DEFINE DICTIONARY_COMMON_INTERFACE(KEY_NAME, KEY_TYPE, KisP, KHELPER, VALUE_NAME, VALUE_TYPE, VHELPER, VNAME)
 //%#pragma mark - KEY_NAME -> VALUE_NAME
 //%
 //%@interface GPB##KEY_NAME##VALUE_NAME##Dictionary : NSObject <NSCopying>
@@ -2130,25 +2130,25 @@ NS_ASSUME_NONNULL_END
 //%@property(nonatomic, readonly) NSUInteger count;
 //%
 //%+ (instancetype)dictionary;
-//%+ (instancetype)dictionaryWithValue:(VALUE_TYPE)value
-//%                             forKey:(KEY_TYPE##KisP$S##KisP)key;
-//%+ (instancetype)dictionaryWithValues:(const VALUE_TYPE ARRAY_ARG_MODIFIER##VHELPER()[])values
-//%                             forKeys:(const KEY_TYPE##KisP$S##KisP ARRAY_ARG_MODIFIER##KHELPER()[])keys
-//%                               count:(NSUInteger)count;
+//%+ (instancetype)dictionaryWith##VNAME$u##:(VALUE_TYPE)##VNAME
+//%                       ##VNAME$S## forKey:(KEY_TYPE##KisP$S##KisP)key;
+//%+ (instancetype)dictionaryWith##VNAME$u##s:(const VALUE_TYPE ARRAY_ARG_MODIFIER##VHELPER()[])##VNAME##s
+//%                      ##VNAME$S##  forKeys:(const KEY_TYPE##KisP$S##KisP ARRAY_ARG_MODIFIER##KHELPER()[])keys
+//%                      ##VNAME$S##    count:(NSUInteger)count;
 //%+ (instancetype)dictionaryWithDictionary:(GPB##KEY_NAME##VALUE_NAME##Dictionary *)dictionary;
 //%+ (instancetype)dictionaryWithCapacity:(NSUInteger)numItems;
 //%
-//%- (instancetype)initWithValues:(const VALUE_TYPE ARRAY_ARG_MODIFIER##VHELPER()[])values
-//%                       forKeys:(const KEY_TYPE##KisP$S##KisP ARRAY_ARG_MODIFIER##KHELPER()[])keys
-//%                         count:(NSUInteger)count NS_DESIGNATED_INITIALIZER;
+//%- (instancetype)initWith##VNAME$u##s:(const VALUE_TYPE ARRAY_ARG_MODIFIER##VHELPER()[])##VNAME##s
+//%                ##VNAME$S##  forKeys:(const KEY_TYPE##KisP$S##KisP ARRAY_ARG_MODIFIER##KHELPER()[])keys
+//%                ##VNAME$S##    count:(NSUInteger)count NS_DESIGNATED_INITIALIZER;
 //%- (instancetype)initWithDictionary:(GPB##KEY_NAME##VALUE_NAME##Dictionary *)dictionary;
 //%- (instancetype)initWithCapacity:(NSUInteger)numItems;
 //%
-//%DICTIONARY_IMMUTABLE_INTERFACE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, VHELPER)
+//%DICTIONARY_IMMUTABLE_INTERFACE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, VHELPER, VNAME)
 //%
 //%- (void)addEntriesFromDictionary:(GPB##KEY_NAME##VALUE_NAME##Dictionary *)otherDictionary;
 //%
-//%DICTIONARY_MUTABLE_INTERFACE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, VHELPER)
+//%DICTIONARY_MUTABLE_INTERFACE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, VHELPER, VNAME)
 //%
 //%@end
 //%
@@ -2189,7 +2189,7 @@ NS_ASSUME_NONNULL_END
 //%// is not a valid enumerator as defined by validationFunc. If the actual value is
 //%// desired, use "raw" version of the method.
 //%
-//%DICTIONARY_IMMUTABLE_INTERFACE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, VHELPER)
+//%DICTIONARY_IMMUTABLE_INTERFACE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, VHELPER, value)
 //%
 //%// These methods bypass the validationFunc to provide access to values that were not
 //%// known at the time the binary was compiled.
@@ -2206,21 +2206,21 @@ NS_ASSUME_NONNULL_END
 //%// to the default value. Use the rawValue methods below to assign non enumerator
 //%// values.
 //%
-//%DICTIONARY_MUTABLE_INTERFACE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, VHELPER)
+//%DICTIONARY_MUTABLE_INTERFACE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, VHELPER, value)
 //%
 //%@end
 //%
 
-//%PDDM-DEFINE DICTIONARY_IMMUTABLE_INTERFACE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, VHELPER)
+//%PDDM-DEFINE DICTIONARY_IMMUTABLE_INTERFACE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, VHELPER, VNAME)
 //%VALUE_FOR_KEY_##VHELPER(KEY_TYPE##KisP$S##KisP, VALUE_TYPE)
 //%
-//%- (void)enumerateKeysAndValuesUsingBlock:
-//%    (void (^)(KEY_TYPE KisP##key, VALUE_TYPE value, BOOL *stop))block;
+//%- (void)enumerateKeysAnd##VNAME$u##sUsingBlock:
+//%    (void (^)(KEY_TYPE KisP##key, VALUE_TYPE VNAME, BOOL *stop))block;
 
-//%PDDM-DEFINE DICTIONARY_MUTABLE_INTERFACE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, VHELPER)
-//%- (void)setValue:(VALUE_TYPE)value forKey:(KEY_TYPE##KisP$S##KisP)key;
+//%PDDM-DEFINE DICTIONARY_MUTABLE_INTERFACE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, VHELPER, VNAME)
+//%- (void)set##VNAME$u##:(VALUE_TYPE)##VNAME forKey:(KEY_TYPE##KisP$S##KisP)key;
 //%DICTIONARY_EXTRA_MUTABLE_METHODS_##VHELPER(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE)
-//%- (void)removeValueForKey:(KEY_TYPE##KisP$S##KisP)aKey;
+//%- (void)remove##VNAME$u##ForKey:(KEY_TYPE##KisP$S##KisP)aKey;
 //%- (void)removeAll;
 
 //%PDDM-DEFINE DICTIONARY_EXTRA_MUTABLE_METHODS_POD(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE)
diff --git a/objectivec/GPBDictionary.m b/objectivec/GPBDictionary.m
index df634279..31ee410e 100644
--- a/objectivec/GPBDictionary.m
+++ b/objectivec/GPBDictionary.m
@@ -479,6 +479,12 @@ void GPBDictionaryReadEntry(id mapDictionary,
         case GPBDataTypeBytes:
           value.valueData = [GPBEmptyNSData() retain];
           break;
+#if defined(__clang_analyzer__)
+        case GPBDataTypeGroup:
+          // Maps can't really have Groups as the value type, but this case is needed
+          // so the analyzer won't report the posibility of send nil in for the value
+          // in the NSMutableDictionary case below.
+#endif
         case GPBDataTypeMessage: {
           value.valueMessage = [[field.msgClass alloc] init];
           break;
@@ -491,7 +497,8 @@ void GPBDictionaryReadEntry(id mapDictionary,
 
     if ((keyDataType == GPBDataTypeString) && GPBDataTypeIsObject(valueDataType)) {
       // mapDictionary is an NSMutableDictionary
-      [mapDictionary setObject:value.valueString forKey:key.valueString];
+      [(NSMutableDictionary *)mapDictionary setObject:value.valueString
+                                               forKey:key.valueString];
     } else {
       if (valueDataType == GPBDataTypeEnum) {
         if (GPBHasPreservingUnknownEnumSemantics([parentMessage descriptor].file.syntax) ||
@@ -536,12 +543,12 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%DICTIONARY_KEY_TO_ENUM_IMPL(KEY_NAME, KEY_TYPE, KisP, Enum, int32_t, KHELPER)
 
 //%PDDM-DEFINE DICTIONARY_KEY_TO_POD_IMPL(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER)
-//%DICTIONARY_COMMON_IMPL(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, POD)
+//%DICTIONARY_COMMON_IMPL(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, POD, value)
 
 //%PDDM-DEFINE DICTIONARY_POD_KEY_TO_OBJECT_IMPL(KEY_NAME, KEY_TYPE, VALUE_NAME, VALUE_TYPE)
-//%DICTIONARY_COMMON_IMPL(KEY_NAME, KEY_TYPE, , VALUE_NAME, VALUE_TYPE, POD, OBJECT)
+//%DICTIONARY_COMMON_IMPL(KEY_NAME, KEY_TYPE, , VALUE_NAME, VALUE_TYPE, POD, OBJECT, object)
 
-//%PDDM-DEFINE DICTIONARY_COMMON_IMPL(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER)
+//%PDDM-DEFINE DICTIONARY_COMMON_IMPL(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, VNAME)
 //%#pragma mark - KEY_NAME -> VALUE_NAME
 //%
 //%@implementation GPB##KEY_NAME##VALUE_NAME##Dictionary {
@@ -550,30 +557,30 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%}
 //%
 //%+ (instancetype)dictionary {
-//%  return [[[self alloc] initWithValues:NULL forKeys:NULL count:0] autorelease];
+//%  return [[[self alloc] initWith##VNAME$u##s:NULL forKeys:NULL count:0] autorelease];
 //%}
 //%
-//%+ (instancetype)dictionaryWithValue:(VALUE_TYPE)value
-//%                             forKey:(KEY_TYPE##KisP$S##KisP)key {
-//%  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+//%+ (instancetype)dictionaryWith##VNAME$u##:(VALUE_TYPE)##VNAME
+//%                      ##VNAME$S##  forKey:(KEY_TYPE##KisP$S##KisP)key {
+//%  // Cast is needed so the compiler knows what class we are invoking initWith##VNAME$u##s:forKeys:count:
 //%  // on to get the type correct.
-//%  return [[(GPB##KEY_NAME##VALUE_NAME##Dictionary*)[self alloc] initWithValues:&value
-//%               KEY_NAME$S VALUE_NAME$S                               forKeys:&key
-//%               KEY_NAME$S VALUE_NAME$S                                 count:1] autorelease];
+//%  return [[(GPB##KEY_NAME##VALUE_NAME##Dictionary*)[self alloc] initWith##VNAME$u##s:&##VNAME
+//%               KEY_NAME$S VALUE_NAME$S                        ##VNAME$S##  forKeys:&key
+//%               KEY_NAME$S VALUE_NAME$S                        ##VNAME$S##    count:1] autorelease];
 //%}
 //%
-//%+ (instancetype)dictionaryWithValues:(const VALUE_TYPE [])values
-//%                             forKeys:(const KEY_TYPE##KisP$S##KisP [])keys
-//%                               count:(NSUInteger)count {
-//%  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+//%+ (instancetype)dictionaryWith##VNAME$u##s:(const VALUE_TYPE [])##VNAME##s
+//%                      ##VNAME$S##  forKeys:(const KEY_TYPE##KisP$S##KisP [])keys
+//%                      ##VNAME$S##    count:(NSUInteger)count {
+//%  // Cast is needed so the compiler knows what class we are invoking initWith##VNAME$u##s:forKeys:count:
 //%  // on to get the type correct.
-//%  return [[(GPB##KEY_NAME##VALUE_NAME##Dictionary*)[self alloc] initWithValues:values
+//%  return [[(GPB##KEY_NAME##VALUE_NAME##Dictionary*)[self alloc] initWith##VNAME$u##s:##VNAME##s
 //%               KEY_NAME$S VALUE_NAME$S                               forKeys:keys
 //%               KEY_NAME$S VALUE_NAME$S                                 count:count] autorelease];
 //%}
 //%
 //%+ (instancetype)dictionaryWithDictionary:(GPB##KEY_NAME##VALUE_NAME##Dictionary *)dictionary {
-//%  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+//%  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
 //%  // on to get the type correct.
 //%  return [[(GPB##KEY_NAME##VALUE_NAME##Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 //%}
@@ -583,18 +590,18 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%}
 //%
 //%- (instancetype)init {
-//%  return [self initWithValues:NULL forKeys:NULL count:0];
+//%  return [self initWith##VNAME$u##s:NULL forKeys:NULL count:0];
 //%}
 //%
-//%- (instancetype)initWithValues:(const VALUE_TYPE [])values
-//%                       forKeys:(const KEY_TYPE##KisP$S##KisP [])keys
-//%                         count:(NSUInteger)count {
+//%- (instancetype)initWith##VNAME$u##s:(const VALUE_TYPE [])##VNAME##s
+//%                ##VNAME$S##  forKeys:(const KEY_TYPE##KisP$S##KisP [])keys
+//%                ##VNAME$S##    count:(NSUInteger)count {
 //%  self = [super init];
 //%  if (self) {
 //%    _dictionary = [[NSMutableDictionary alloc] init];
-//%    if (count && values && keys) {
+//%    if (count && VNAME##s && keys) {
 //%      for (NSUInteger i = 0; i < count; ++i) {
-//%        [_dictionary setObject:WRAPPED##VHELPER(values[i]) forKey:WRAPPED##KHELPER(keys[i])];
+//%        [_dictionary setObject:WRAPPED##VHELPER(VNAME##s[i]) forKey:WRAPPED##KHELPER(keys[i])];
 //%      }
 //%    }
 //%  }
@@ -602,7 +609,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%}
 //%
 //%- (instancetype)initWithDictionary:(GPB##KEY_NAME##VALUE_NAME##Dictionary *)dictionary {
-//%  self = [self initWithValues:NULL forKeys:NULL count:0];
+//%  self = [self initWith##VNAME$u##s:NULL forKeys:NULL count:0];
 //%  if (self) {
 //%    if (dictionary) {
 //%      [_dictionary addEntriesFromDictionary:dictionary->_dictionary];
@@ -613,14 +620,14 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%
 //%- (instancetype)initWithCapacity:(NSUInteger)numItems {
 //%  #pragma unused(numItems)
-//%  return [self initWithValues:NULL forKeys:NULL count:0];
+//%  return [self initWith##VNAME$u##s:NULL forKeys:NULL count:0];
 //%}
 //%
-//%DICTIONARY_IMMUTABLE_CORE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, )
+//%DICTIONARY_IMMUTABLE_CORE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, VNAME, )
 //%
 //%VALUE_FOR_KEY_##VHELPER(KEY_TYPE##KisP$S##KisP, VALUE_NAME, VALUE_TYPE, KHELPER)
 //%
-//%DICTIONARY_MUTABLE_CORE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, )
+//%DICTIONARY_MUTABLE_CORE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, VNAME, )
 //%
 //%@end
 //%
@@ -730,7 +737,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%  return [self initWithValidationFunction:func rawValues:NULL forKeys:NULL count:0];
 //%}
 //%
-//%DICTIONARY_IMMUTABLE_CORE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, Raw)
+//%DICTIONARY_IMMUTABLE_CORE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, value, Raw)
 //%
 //%- (BOOL)valueForKey:(KEY_TYPE##KisP$S##KisP)key value:(VALUE_TYPE *)value {
 //%  NSNumber *wrapped = [_dictionary objectForKey:WRAPPED##KHELPER(key)];
@@ -766,7 +773,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%  }];
 //%}
 //%
-//%DICTIONARY_MUTABLE_CORE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, Raw)
+//%DICTIONARY_MUTABLE_CORE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, value, Raw)
 //%
 //%- (void)setValue:(VALUE_TYPE)value forKey:(KEY_TYPE##KisP$S##KisP)key {
 //%  if (!_validationFunc(value)) {
@@ -784,7 +791,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%@end
 //%
 
-//%PDDM-DEFINE DICTIONARY_IMMUTABLE_CORE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, ACCESSOR_NAME)
+//%PDDM-DEFINE DICTIONARY_IMMUTABLE_CORE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, VNAME, ACCESSOR_NAME)
 //%- (void)dealloc {
 //%  NSAssert(!_autocreator,
 //%           @"%@: Autocreator must be cleared before release, autocreator: %@",
@@ -819,12 +826,12 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%  return _dictionary.count;
 //%}
 //%
-//%- (void)enumerateKeysAnd##ACCESSOR_NAME##ValuesUsingBlock:
-//%    (void (^)(KEY_TYPE KisP##key, VALUE_TYPE value, BOOL *stop))block {
+//%- (void)enumerateKeysAnd##ACCESSOR_NAME##VNAME$u##sUsingBlock:
+//%    (void (^)(KEY_TYPE KisP##key, VALUE_TYPE VNAME, BOOL *stop))block {
 //%  [_dictionary enumerateKeysAndObjectsUsingBlock:^(ENUM_TYPE##KHELPER(KEY_TYPE)##aKey,
-//%                                                   ENUM_TYPE##VHELPER(VALUE_TYPE)##aValue,
+//%                                                   ENUM_TYPE##VHELPER(VALUE_TYPE)##a##VNAME$u,
 //%                                                   BOOL *stop) {
-//%      block(UNWRAP##KEY_NAME(aKey), UNWRAP##VALUE_NAME(aValue), stop);
+//%      block(UNWRAP##KEY_NAME(aKey), UNWRAP##VALUE_NAME(a##VNAME$u), stop);
 //%  }];
 //%}
 //%
@@ -838,11 +845,11 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%  GPBDataType keyDataType = field.mapKeyDataType;
 //%  __block size_t result = 0;
 //%  [_dictionary enumerateKeysAndObjectsUsingBlock:^(ENUM_TYPE##KHELPER(KEY_TYPE)##aKey,
-//%                                                   ENUM_TYPE##VHELPER(VALUE_TYPE)##aValue,
+//%                                                   ENUM_TYPE##VHELPER(VALUE_TYPE)##a##VNAME$u##,
 //%                                                   BOOL *stop) {
 //%    #pragma unused(stop)
 //%    size_t msgSize = ComputeDict##KEY_NAME##FieldSize(UNWRAP##KEY_NAME(aKey), kMapKeyFieldNumber, keyDataType);
-//%    msgSize += ComputeDict##VALUE_NAME##FieldSize(UNWRAP##VALUE_NAME(aValue), kMapValueFieldNumber, valueDataType);
+//%    msgSize += ComputeDict##VALUE_NAME##FieldSize(UNWRAP##VALUE_NAME(a##VNAME$u), kMapValueFieldNumber, valueDataType);
 //%    result += GPBComputeRawVarint32SizeForInteger(msgSize) + msgSize;
 //%  }];
 //%  size_t tagSize = GPBComputeWireFormatTagSize(GPBFieldNumber(field), GPBDataTypeMessage);
@@ -856,18 +863,18 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%  GPBDataType keyDataType = field.mapKeyDataType;
 //%  uint32_t tag = GPBWireFormatMakeTag(GPBFieldNumber(field), GPBWireFormatLengthDelimited);
 //%  [_dictionary enumerateKeysAndObjectsUsingBlock:^(ENUM_TYPE##KHELPER(KEY_TYPE)##aKey,
-//%                                                   ENUM_TYPE##VHELPER(VALUE_TYPE)##aValue,
+//%                                                   ENUM_TYPE##VHELPER(VALUE_TYPE)##a##VNAME$u,
 //%                                                   BOOL *stop) {
 //%    #pragma unused(stop)
 //%    // Write the tag.
 //%    [outputStream writeInt32NoTag:tag];
 //%    // Write the size of the message.
 //%    size_t msgSize = ComputeDict##KEY_NAME##FieldSize(UNWRAP##KEY_NAME(aKey), kMapKeyFieldNumber, keyDataType);
-//%    msgSize += ComputeDict##VALUE_NAME##FieldSize(UNWRAP##VALUE_NAME(aValue), kMapValueFieldNumber, valueDataType);
+//%    msgSize += ComputeDict##VALUE_NAME##FieldSize(UNWRAP##VALUE_NAME(a##VNAME$u), kMapValueFieldNumber, valueDataType);
 //%    [outputStream writeInt32NoTag:(int32_t)msgSize];
 //%    // Write the fields.
 //%    WriteDict##KEY_NAME##Field(outputStream, UNWRAP##KEY_NAME(aKey), kMapKeyFieldNumber, keyDataType);
-//%    WriteDict##VALUE_NAME##Field(outputStream, UNWRAP##VALUE_NAME(aValue), kMapValueFieldNumber, valueDataType);
+//%    WriteDict##VALUE_NAME##Field(outputStream, UNWRAP##VALUE_NAME(a##VNAME$u), kMapValueFieldNumber, valueDataType);
 //%  }];
 //%}
 //%
@@ -877,12 +884,12 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%}
 //%
 //%- (void)enumerateForTextFormat:(void (^)(id keyObj, id valueObj))block {
-//%  [self enumerateKeysAnd##ACCESSOR_NAME##ValuesUsingBlock:^(KEY_TYPE KisP##key, VALUE_TYPE value, BOOL *stop) {
+//%  [self enumerateKeysAnd##ACCESSOR_NAME##VNAME$u##sUsingBlock:^(KEY_TYPE KisP##key, VALUE_TYPE VNAME, BOOL *stop) {
 //%      #pragma unused(stop)
-//%      block(TEXT_FORMAT_OBJ##KEY_NAME(key), TEXT_FORMAT_OBJ##VALUE_NAME(value));
+//%      block(TEXT_FORMAT_OBJ##KEY_NAME(key), TEXT_FORMAT_OBJ##VALUE_NAME(VNAME));
 //%  }];
 //%}
-//%PDDM-DEFINE DICTIONARY_MUTABLE_CORE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, ACCESSOR_NAME)
+//%PDDM-DEFINE DICTIONARY_MUTABLE_CORE(KEY_NAME, KEY_TYPE, KisP, VALUE_NAME, VALUE_TYPE, KHELPER, VHELPER, VNAME, ACCESSOR_NAME)
 //%- (void)add##ACCESSOR_NAME##EntriesFromDictionary:(GPB##KEY_NAME##VALUE_NAME##Dictionary *)otherDictionary {
 //%  if (otherDictionary) {
 //%    [_dictionary addEntriesFromDictionary:otherDictionary->_dictionary];
@@ -892,14 +899,14 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%  }
 //%}
 //%
-//%- (void)set##ACCESSOR_NAME##Value:(VALUE_TYPE)value forKey:(KEY_TYPE##KisP$S##KisP)key {
-//%  [_dictionary setObject:WRAPPED##VHELPER(value) forKey:WRAPPED##KHELPER(key)];
+//%- (void)set##ACCESSOR_NAME##VNAME$u##:(VALUE_TYPE)VNAME forKey:(KEY_TYPE##KisP$S##KisP)key {
+//%  [_dictionary setObject:WRAPPED##VHELPER(VNAME) forKey:WRAPPED##KHELPER(key)];
 //%  if (_autocreator) {
 //%    GPBAutocreatedDictionaryModified(_autocreator, self);
 //%  }
 //%}
 //%
-//%- (void)removeValueForKey:(KEY_TYPE##KisP$S##KisP)aKey {
+//%- (void)remove##VNAME$u##ForKey:(KEY_TYPE##KisP$S##KisP)aKey {
 //%  [_dictionary removeObjectForKey:WRAPPED##KHELPER(aKey)];
 //%}
 //%
@@ -912,11 +919,11 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //
 
 //%PDDM-DEFINE DICTIONARY_BOOL_KEY_TO_POD_IMPL(VALUE_NAME, VALUE_TYPE)
-//%DICTIONARY_BOOL_KEY_TO_VALUE_IMPL(VALUE_NAME, VALUE_TYPE, POD)
+//%DICTIONARY_BOOL_KEY_TO_VALUE_IMPL(VALUE_NAME, VALUE_TYPE, POD, value)
 //%PDDM-DEFINE DICTIONARY_BOOL_KEY_TO_OBJECT_IMPL(VALUE_NAME, VALUE_TYPE)
-//%DICTIONARY_BOOL_KEY_TO_VALUE_IMPL(VALUE_NAME, VALUE_TYPE, OBJECT)
+//%DICTIONARY_BOOL_KEY_TO_VALUE_IMPL(VALUE_NAME, VALUE_TYPE, OBJECT, object)
 
-//%PDDM-DEFINE DICTIONARY_BOOL_KEY_TO_VALUE_IMPL(VALUE_NAME, VALUE_TYPE, HELPER)
+//%PDDM-DEFINE DICTIONARY_BOOL_KEY_TO_VALUE_IMPL(VALUE_NAME, VALUE_TYPE, HELPER, VNAME)
 //%#pragma mark - Bool -> VALUE_NAME
 //%
 //%@implementation GPBBool##VALUE_NAME##Dictionary {
@@ -925,30 +932,30 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%BOOL_DICT_HAS_STORAGE_##HELPER()}
 //%
 //%+ (instancetype)dictionary {
-//%  return [[[self alloc] initWithValues:NULL forKeys:NULL count:0] autorelease];
+//%  return [[[self alloc] initWith##VNAME$u##s:NULL forKeys:NULL count:0] autorelease];
 //%}
 //%
-//%+ (instancetype)dictionaryWithValue:(VALUE_TYPE)value
-//%                             forKey:(BOOL)key {
-//%  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+//%+ (instancetype)dictionaryWith##VNAME$u##:(VALUE_TYPE)VNAME
+//%                      ##VNAME$S##  forKey:(BOOL)key {
+//%  // Cast is needed so the compiler knows what class we are invoking initWith##VNAME$u##s:forKeys:count:
 //%  // on to get the type correct.
-//%  return [[(GPBBool##VALUE_NAME##Dictionary*)[self alloc] initWithValues:&value
-//%                    VALUE_NAME$S                               forKeys:&key
-//%                    VALUE_NAME$S                                 count:1] autorelease];
+//%  return [[(GPBBool##VALUE_NAME##Dictionary*)[self alloc] initWith##VNAME$u##s:&##VNAME
+//%                    VALUE_NAME$S                        ##VNAME$S##  forKeys:&key
+//%                    VALUE_NAME$S                        ##VNAME$S##    count:1] autorelease];
 //%}
 //%
-//%+ (instancetype)dictionaryWithValues:(const VALUE_TYPE [])values
-//%                             forKeys:(const BOOL [])keys
-//%                               count:(NSUInteger)count {
-//%  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+//%+ (instancetype)dictionaryWith##VNAME$u##s:(const VALUE_TYPE [])##VNAME##s
+//%                      ##VNAME$S##  forKeys:(const BOOL [])keys
+//%                      ##VNAME$S##    count:(NSUInteger)count {
+//%  // Cast is needed so the compiler knows what class we are invoking initWith##VNAME$u##s:forKeys:count:
 //%  // on to get the type correct.
-//%  return [[(GPBBool##VALUE_NAME##Dictionary*)[self alloc] initWithValues:values
-//%                    VALUE_NAME$S                               forKeys:keys
-//%                    VALUE_NAME$S                                 count:count] autorelease];
+//%  return [[(GPBBool##VALUE_NAME##Dictionary*)[self alloc] initWith##VNAME$u##s:##VNAME##s
+//%                    VALUE_NAME$S                        ##VNAME$S##  forKeys:keys
+//%                    VALUE_NAME$S                        ##VNAME$S##    count:count] autorelease];
 //%}
 //%
 //%+ (instancetype)dictionaryWithDictionary:(GPBBool##VALUE_NAME##Dictionary *)dictionary {
-//%  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+//%  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
 //%  // on to get the type correct.
 //%  return [[(GPBBool##VALUE_NAME##Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 //%}
@@ -958,14 +965,14 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%}
 //%
 //%- (instancetype)init {
-//%  return [self initWithValues:NULL forKeys:NULL count:0];
+//%  return [self initWith##VNAME$u##s:NULL forKeys:NULL count:0];
 //%}
 //%
 //%BOOL_DICT_INITS_##HELPER(VALUE_NAME, VALUE_TYPE)
 //%
 //%- (instancetype)initWithCapacity:(NSUInteger)numItems {
 //%  #pragma unused(numItems)
-//%  return [self initWithValues:NULL forKeys:NULL count:0];
+//%  return [self initWith##VNAME$u##s:NULL forKeys:NULL count:0];
 //%}
 //%
 //%BOOL_DICT_DEALLOC##HELPER()
@@ -1025,8 +1032,8 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%  }
 //%}
 //%
-//%- (void)enumerateKeysAndValuesUsingBlock:
-//%    (void (^)(BOOL key, VALUE_TYPE value, BOOL *stop))block {
+//%- (void)enumerateKeysAnd##VNAME$u##sUsingBlock:
+//%    (void (^)(BOOL key, VALUE_TYPE VNAME, BOOL *stop))block {
 //%  BOOL stop = NO;
 //%  if (BOOL_DICT_HAS##HELPER(0, )) {
 //%    block(NO, _values[0], &stop);
@@ -1282,7 +1289,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //
 
 //%PDDM-DEFINE VALUE_FOR_KEY_OBJECT(KEY_TYPE, VALUE_NAME, VALUE_TYPE, KHELPER)
-//%- (VALUE_TYPE)valueForKey:(KEY_TYPE)key {
+//%- (VALUE_TYPE)objectForKey:(KEY_TYPE)key {
 //%  VALUE_TYPE result = [_dictionary objectForKey:WRAPPED##KHELPER(key)];
 //%  return result;
 //%}
@@ -1361,22 +1368,22 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%PDDM-DEFINE BOOL_DICT_HAS_STORAGE_OBJECT()
 // Empty
 //%PDDM-DEFINE BOOL_DICT_INITS_OBJECT(VALUE_NAME, VALUE_TYPE)
-//%- (instancetype)initWithValues:(const VALUE_TYPE [])values
-//%                       forKeys:(const BOOL [])keys
-//%                         count:(NSUInteger)count {
+//%- (instancetype)initWithObjects:(const VALUE_TYPE [])objects
+//%                        forKeys:(const BOOL [])keys
+//%                          count:(NSUInteger)count {
 //%  self = [super init];
 //%  if (self) {
 //%    for (NSUInteger i = 0; i < count; ++i) {
 //%      int idx = keys[i] ? 1 : 0;
 //%      [_values[idx] release];
-//%      _values[idx] = (VALUE_TYPE)[values[i] retain];
+//%      _values[idx] = (VALUE_TYPE)[objects[i] retain];
 //%    }
 //%  }
 //%  return self;
 //%}
 //%
 //%- (instancetype)initWithDictionary:(GPBBool##VALUE_NAME##Dictionary *)dictionary {
-//%  self = [self initWithValues:NULL forKeys:NULL count:0];
+//%  self = [self initWithObjects:NULL forKeys:NULL count:0];
 //%  if (self) {
 //%    if (dictionary) {
 //%      _values[0] = [dictionary->_values[0] retain];
@@ -1399,7 +1406,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%PDDM-DEFINE BOOL_DICT_HASOBJECT(IDX, REF)
 //%REF##_values[IDX] != nil
 //%PDDM-DEFINE BOOL_VALUE_FOR_KEY_OBJECT(VALUE_TYPE)
-//%- (VALUE_TYPE)valueForKey:(BOOL)key {
+//%- (VALUE_TYPE)objectForKey:(BOOL)key {
 //%  return _values[key ? 1 : 0];
 //%}
 //%PDDM-DEFINE BOOL_SET_GPBVALUE_FOR_KEY_OBJECT(VALUE_NAME, VALUE_TYPE, VisP)
@@ -1425,16 +1432,16 @@ void GPBDictionaryReadEntry(id mapDictionary,
 //%  }
 //%}
 //%
-//%- (void)setValue:(VALUE_TYPE)value forKey:(BOOL)key {
+//%- (void)setObject:(VALUE_TYPE)object forKey:(BOOL)key {
 //%  int idx = (key ? 1 : 0);
 //%  [_values[idx] release];
-//%  _values[idx] = [value retain];
+//%  _values[idx] = [object retain];
 //%  if (_autocreator) {
 //%    GPBAutocreatedDictionaryModified(_autocreator, self);
 //%  }
 //%}
 //%
-//%- (void)removeValueForKey:(BOOL)aKey {
+//%- (void)removeObjectForKey:(BOOL)aKey {
 //%  int idx = (aKey ? 1 : 0);
 //%  [_values[idx] release];
 //%  _values[idx] = nil;
@@ -1484,7 +1491,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt32UInt32Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt32UInt32Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -1690,7 +1697,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt32Int32Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt32Int32Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -1896,7 +1903,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt32UInt64Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt32UInt64Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -2102,7 +2109,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt32Int64Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt32Int64Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -2308,7 +2315,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt32BoolDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt32BoolDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -2514,7 +2521,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt32FloatDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt32FloatDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -2720,7 +2727,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt32DoubleDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt32DoubleDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -3188,30 +3195,30 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionary {
-  return [[[self alloc] initWithValues:NULL forKeys:NULL count:0] autorelease];
+  return [[[self alloc] initWithObjects:NULL forKeys:NULL count:0] autorelease];
 }
 
-+ (instancetype)dictionaryWithValue:(id)value
-                             forKey:(uint32_t)key {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
++ (instancetype)dictionaryWithObject:(id)object
+                              forKey:(uint32_t)key {
+  // Cast is needed so the compiler knows what class we are invoking initWithObjects:forKeys:count:
   // on to get the type correct.
-  return [[(GPBUInt32ObjectDictionary*)[self alloc] initWithValues:&value
-                                                           forKeys:&key
-                                                             count:1] autorelease];
+  return [[(GPBUInt32ObjectDictionary*)[self alloc] initWithObjects:&object
+                                                            forKeys:&key
+                                                              count:1] autorelease];
 }
 
-+ (instancetype)dictionaryWithValues:(const id [])values
-                             forKeys:(const uint32_t [])keys
-                               count:(NSUInteger)count {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
++ (instancetype)dictionaryWithObjects:(const id [])objects
+                              forKeys:(const uint32_t [])keys
+                                count:(NSUInteger)count {
+  // Cast is needed so the compiler knows what class we are invoking initWithObjects:forKeys:count:
   // on to get the type correct.
-  return [[(GPBUInt32ObjectDictionary*)[self alloc] initWithValues:values
+  return [[(GPBUInt32ObjectDictionary*)[self alloc] initWithObjects:objects
                                                            forKeys:keys
                                                              count:count] autorelease];
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt32ObjectDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt32ObjectDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -3221,18 +3228,18 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (instancetype)init {
-  return [self initWithValues:NULL forKeys:NULL count:0];
+  return [self initWithObjects:NULL forKeys:NULL count:0];
 }
 
-- (instancetype)initWithValues:(const id [])values
-                       forKeys:(const uint32_t [])keys
-                         count:(NSUInteger)count {
+- (instancetype)initWithObjects:(const id [])objects
+                        forKeys:(const uint32_t [])keys
+                          count:(NSUInteger)count {
   self = [super init];
   if (self) {
     _dictionary = [[NSMutableDictionary alloc] init];
-    if (count && values && keys) {
+    if (count && objects && keys) {
       for (NSUInteger i = 0; i < count; ++i) {
-        [_dictionary setObject:values[i] forKey:@(keys[i])];
+        [_dictionary setObject:objects[i] forKey:@(keys[i])];
       }
     }
   }
@@ -3240,7 +3247,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (instancetype)initWithDictionary:(GPBUInt32ObjectDictionary *)dictionary {
-  self = [self initWithValues:NULL forKeys:NULL count:0];
+  self = [self initWithObjects:NULL forKeys:NULL count:0];
   if (self) {
     if (dictionary) {
       [_dictionary addEntriesFromDictionary:dictionary->_dictionary];
@@ -3251,7 +3258,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 
 - (instancetype)initWithCapacity:(NSUInteger)numItems {
   #pragma unused(numItems)
-  return [self initWithValues:NULL forKeys:NULL count:0];
+  return [self initWithObjects:NULL forKeys:NULL count:0];
 }
 
 - (void)dealloc {
@@ -3288,12 +3295,12 @@ void GPBDictionaryReadEntry(id mapDictionary,
   return _dictionary.count;
 }
 
-- (void)enumerateKeysAndValuesUsingBlock:
-    (void (^)(uint32_t key, id value, BOOL *stop))block {
+- (void)enumerateKeysAndObjectsUsingBlock:
+    (void (^)(uint32_t key, id object, BOOL *stop))block {
   [_dictionary enumerateKeysAndObjectsUsingBlock:^(NSNumber *aKey,
-                                                   id aValue,
+                                                   id aObject,
                                                    BOOL *stop) {
-      block([aKey unsignedIntValue], aValue, stop);
+      block([aKey unsignedIntValue], aObject, stop);
   }];
 }
 
@@ -3330,11 +3337,11 @@ void GPBDictionaryReadEntry(id mapDictionary,
   GPBDataType keyDataType = field.mapKeyDataType;
   __block size_t result = 0;
   [_dictionary enumerateKeysAndObjectsUsingBlock:^(NSNumber *aKey,
-                                                   id aValue,
+                                                   id aObject,
                                                    BOOL *stop) {
     #pragma unused(stop)
     size_t msgSize = ComputeDictUInt32FieldSize([aKey unsignedIntValue], kMapKeyFieldNumber, keyDataType);
-    msgSize += ComputeDictObjectFieldSize(aValue, kMapValueFieldNumber, valueDataType);
+    msgSize += ComputeDictObjectFieldSize(aObject, kMapValueFieldNumber, valueDataType);
     result += GPBComputeRawVarint32SizeForInteger(msgSize) + msgSize;
   }];
   size_t tagSize = GPBComputeWireFormatTagSize(GPBFieldNumber(field), GPBDataTypeMessage);
@@ -3348,18 +3355,18 @@ void GPBDictionaryReadEntry(id mapDictionary,
   GPBDataType keyDataType = field.mapKeyDataType;
   uint32_t tag = GPBWireFormatMakeTag(GPBFieldNumber(field), GPBWireFormatLengthDelimited);
   [_dictionary enumerateKeysAndObjectsUsingBlock:^(NSNumber *aKey,
-                                                   id aValue,
+                                                   id aObject,
                                                    BOOL *stop) {
     #pragma unused(stop)
     // Write the tag.
     [outputStream writeInt32NoTag:tag];
     // Write the size of the message.
     size_t msgSize = ComputeDictUInt32FieldSize([aKey unsignedIntValue], kMapKeyFieldNumber, keyDataType);
-    msgSize += ComputeDictObjectFieldSize(aValue, kMapValueFieldNumber, valueDataType);
+    msgSize += ComputeDictObjectFieldSize(aObject, kMapValueFieldNumber, valueDataType);
     [outputStream writeInt32NoTag:(int32_t)msgSize];
     // Write the fields.
     WriteDictUInt32Field(outputStream, [aKey unsignedIntValue], kMapKeyFieldNumber, keyDataType);
-    WriteDictObjectField(outputStream, aValue, kMapValueFieldNumber, valueDataType);
+    WriteDictObjectField(outputStream, aObject, kMapValueFieldNumber, valueDataType);
   }];
 }
 
@@ -3369,13 +3376,13 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (void)enumerateForTextFormat:(void (^)(id keyObj, id valueObj))block {
-  [self enumerateKeysAndValuesUsingBlock:^(uint32_t key, id value, BOOL *stop) {
+  [self enumerateKeysAndObjectsUsingBlock:^(uint32_t key, id object, BOOL *stop) {
       #pragma unused(stop)
-      block([NSString stringWithFormat:@"%u", key], value);
+      block([NSString stringWithFormat:@"%u", key], object);
   }];
 }
 
-- (id)valueForKey:(uint32_t)key {
+- (id)objectForKey:(uint32_t)key {
   id result = [_dictionary objectForKey:@(key)];
   return result;
 }
@@ -3389,14 +3396,14 @@ void GPBDictionaryReadEntry(id mapDictionary,
   }
 }
 
-- (void)setValue:(id)value forKey:(uint32_t)key {
-  [_dictionary setObject:value forKey:@(key)];
+- (void)setObject:(id)object forKey:(uint32_t)key {
+  [_dictionary setObject:object forKey:@(key)];
   if (_autocreator) {
     GPBAutocreatedDictionaryModified(_autocreator, self);
   }
 }
 
-- (void)removeValueForKey:(uint32_t)aKey {
+- (void)removeObjectForKey:(uint32_t)aKey {
   [_dictionary removeObjectForKey:@(aKey)];
 }
 
@@ -3440,7 +3447,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt32UInt32Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt32UInt32Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -3646,7 +3653,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt32Int32Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt32Int32Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -3852,7 +3859,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt32UInt64Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt32UInt64Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -4058,7 +4065,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt32Int64Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt32Int64Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -4264,7 +4271,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt32BoolDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt32BoolDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -4470,7 +4477,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt32FloatDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt32FloatDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -4676,7 +4683,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt32DoubleDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt32DoubleDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -5144,30 +5151,30 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionary {
-  return [[[self alloc] initWithValues:NULL forKeys:NULL count:0] autorelease];
+  return [[[self alloc] initWithObjects:NULL forKeys:NULL count:0] autorelease];
 }
 
-+ (instancetype)dictionaryWithValue:(id)value
-                             forKey:(int32_t)key {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
++ (instancetype)dictionaryWithObject:(id)object
+                              forKey:(int32_t)key {
+  // Cast is needed so the compiler knows what class we are invoking initWithObjects:forKeys:count:
   // on to get the type correct.
-  return [[(GPBInt32ObjectDictionary*)[self alloc] initWithValues:&value
-                                                          forKeys:&key
-                                                            count:1] autorelease];
+  return [[(GPBInt32ObjectDictionary*)[self alloc] initWithObjects:&object
+                                                           forKeys:&key
+                                                             count:1] autorelease];
 }
 
-+ (instancetype)dictionaryWithValues:(const id [])values
-                             forKeys:(const int32_t [])keys
-                               count:(NSUInteger)count {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
++ (instancetype)dictionaryWithObjects:(const id [])objects
+                              forKeys:(const int32_t [])keys
+                                count:(NSUInteger)count {
+  // Cast is needed so the compiler knows what class we are invoking initWithObjects:forKeys:count:
   // on to get the type correct.
-  return [[(GPBInt32ObjectDictionary*)[self alloc] initWithValues:values
+  return [[(GPBInt32ObjectDictionary*)[self alloc] initWithObjects:objects
                                                           forKeys:keys
                                                             count:count] autorelease];
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt32ObjectDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt32ObjectDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -5177,18 +5184,18 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (instancetype)init {
-  return [self initWithValues:NULL forKeys:NULL count:0];
+  return [self initWithObjects:NULL forKeys:NULL count:0];
 }
 
-- (instancetype)initWithValues:(const id [])values
-                       forKeys:(const int32_t [])keys
-                         count:(NSUInteger)count {
+- (instancetype)initWithObjects:(const id [])objects
+                        forKeys:(const int32_t [])keys
+                          count:(NSUInteger)count {
   self = [super init];
   if (self) {
     _dictionary = [[NSMutableDictionary alloc] init];
-    if (count && values && keys) {
+    if (count && objects && keys) {
       for (NSUInteger i = 0; i < count; ++i) {
-        [_dictionary setObject:values[i] forKey:@(keys[i])];
+        [_dictionary setObject:objects[i] forKey:@(keys[i])];
       }
     }
   }
@@ -5196,7 +5203,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (instancetype)initWithDictionary:(GPBInt32ObjectDictionary *)dictionary {
-  self = [self initWithValues:NULL forKeys:NULL count:0];
+  self = [self initWithObjects:NULL forKeys:NULL count:0];
   if (self) {
     if (dictionary) {
       [_dictionary addEntriesFromDictionary:dictionary->_dictionary];
@@ -5207,7 +5214,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 
 - (instancetype)initWithCapacity:(NSUInteger)numItems {
   #pragma unused(numItems)
-  return [self initWithValues:NULL forKeys:NULL count:0];
+  return [self initWithObjects:NULL forKeys:NULL count:0];
 }
 
 - (void)dealloc {
@@ -5244,12 +5251,12 @@ void GPBDictionaryReadEntry(id mapDictionary,
   return _dictionary.count;
 }
 
-- (void)enumerateKeysAndValuesUsingBlock:
-    (void (^)(int32_t key, id value, BOOL *stop))block {
+- (void)enumerateKeysAndObjectsUsingBlock:
+    (void (^)(int32_t key, id object, BOOL *stop))block {
   [_dictionary enumerateKeysAndObjectsUsingBlock:^(NSNumber *aKey,
-                                                   id aValue,
+                                                   id aObject,
                                                    BOOL *stop) {
-      block([aKey intValue], aValue, stop);
+      block([aKey intValue], aObject, stop);
   }];
 }
 
@@ -5286,11 +5293,11 @@ void GPBDictionaryReadEntry(id mapDictionary,
   GPBDataType keyDataType = field.mapKeyDataType;
   __block size_t result = 0;
   [_dictionary enumerateKeysAndObjectsUsingBlock:^(NSNumber *aKey,
-                                                   id aValue,
+                                                   id aObject,
                                                    BOOL *stop) {
     #pragma unused(stop)
     size_t msgSize = ComputeDictInt32FieldSize([aKey intValue], kMapKeyFieldNumber, keyDataType);
-    msgSize += ComputeDictObjectFieldSize(aValue, kMapValueFieldNumber, valueDataType);
+    msgSize += ComputeDictObjectFieldSize(aObject, kMapValueFieldNumber, valueDataType);
     result += GPBComputeRawVarint32SizeForInteger(msgSize) + msgSize;
   }];
   size_t tagSize = GPBComputeWireFormatTagSize(GPBFieldNumber(field), GPBDataTypeMessage);
@@ -5304,18 +5311,18 @@ void GPBDictionaryReadEntry(id mapDictionary,
   GPBDataType keyDataType = field.mapKeyDataType;
   uint32_t tag = GPBWireFormatMakeTag(GPBFieldNumber(field), GPBWireFormatLengthDelimited);
   [_dictionary enumerateKeysAndObjectsUsingBlock:^(NSNumber *aKey,
-                                                   id aValue,
+                                                   id aObject,
                                                    BOOL *stop) {
     #pragma unused(stop)
     // Write the tag.
     [outputStream writeInt32NoTag:tag];
     // Write the size of the message.
     size_t msgSize = ComputeDictInt32FieldSize([aKey intValue], kMapKeyFieldNumber, keyDataType);
-    msgSize += ComputeDictObjectFieldSize(aValue, kMapValueFieldNumber, valueDataType);
+    msgSize += ComputeDictObjectFieldSize(aObject, kMapValueFieldNumber, valueDataType);
     [outputStream writeInt32NoTag:(int32_t)msgSize];
     // Write the fields.
     WriteDictInt32Field(outputStream, [aKey intValue], kMapKeyFieldNumber, keyDataType);
-    WriteDictObjectField(outputStream, aValue, kMapValueFieldNumber, valueDataType);
+    WriteDictObjectField(outputStream, aObject, kMapValueFieldNumber, valueDataType);
   }];
 }
 
@@ -5325,13 +5332,13 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (void)enumerateForTextFormat:(void (^)(id keyObj, id valueObj))block {
-  [self enumerateKeysAndValuesUsingBlock:^(int32_t key, id value, BOOL *stop) {
+  [self enumerateKeysAndObjectsUsingBlock:^(int32_t key, id object, BOOL *stop) {
       #pragma unused(stop)
-      block([NSString stringWithFormat:@"%d", key], value);
+      block([NSString stringWithFormat:@"%d", key], object);
   }];
 }
 
-- (id)valueForKey:(int32_t)key {
+- (id)objectForKey:(int32_t)key {
   id result = [_dictionary objectForKey:@(key)];
   return result;
 }
@@ -5345,14 +5352,14 @@ void GPBDictionaryReadEntry(id mapDictionary,
   }
 }
 
-- (void)setValue:(id)value forKey:(int32_t)key {
-  [_dictionary setObject:value forKey:@(key)];
+- (void)setObject:(id)object forKey:(int32_t)key {
+  [_dictionary setObject:object forKey:@(key)];
   if (_autocreator) {
     GPBAutocreatedDictionaryModified(_autocreator, self);
   }
 }
 
-- (void)removeValueForKey:(int32_t)aKey {
+- (void)removeObjectForKey:(int32_t)aKey {
   [_dictionary removeObjectForKey:@(aKey)];
 }
 
@@ -5396,7 +5403,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt64UInt32Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt64UInt32Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -5602,7 +5609,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt64Int32Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt64Int32Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -5808,7 +5815,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt64UInt64Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt64UInt64Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -6014,7 +6021,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt64Int64Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt64Int64Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -6220,7 +6227,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt64BoolDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt64BoolDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -6426,7 +6433,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt64FloatDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt64FloatDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -6632,7 +6639,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt64DoubleDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt64DoubleDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -7100,30 +7107,30 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionary {
-  return [[[self alloc] initWithValues:NULL forKeys:NULL count:0] autorelease];
+  return [[[self alloc] initWithObjects:NULL forKeys:NULL count:0] autorelease];
 }
 
-+ (instancetype)dictionaryWithValue:(id)value
-                             forKey:(uint64_t)key {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
++ (instancetype)dictionaryWithObject:(id)object
+                              forKey:(uint64_t)key {
+  // Cast is needed so the compiler knows what class we are invoking initWithObjects:forKeys:count:
   // on to get the type correct.
-  return [[(GPBUInt64ObjectDictionary*)[self alloc] initWithValues:&value
-                                                           forKeys:&key
-                                                             count:1] autorelease];
+  return [[(GPBUInt64ObjectDictionary*)[self alloc] initWithObjects:&object
+                                                            forKeys:&key
+                                                              count:1] autorelease];
 }
 
-+ (instancetype)dictionaryWithValues:(const id [])values
-                             forKeys:(const uint64_t [])keys
-                               count:(NSUInteger)count {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
++ (instancetype)dictionaryWithObjects:(const id [])objects
+                              forKeys:(const uint64_t [])keys
+                                count:(NSUInteger)count {
+  // Cast is needed so the compiler knows what class we are invoking initWithObjects:forKeys:count:
   // on to get the type correct.
-  return [[(GPBUInt64ObjectDictionary*)[self alloc] initWithValues:values
+  return [[(GPBUInt64ObjectDictionary*)[self alloc] initWithObjects:objects
                                                            forKeys:keys
                                                              count:count] autorelease];
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBUInt64ObjectDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBUInt64ObjectDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -7133,18 +7140,18 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (instancetype)init {
-  return [self initWithValues:NULL forKeys:NULL count:0];
+  return [self initWithObjects:NULL forKeys:NULL count:0];
 }
 
-- (instancetype)initWithValues:(const id [])values
-                       forKeys:(const uint64_t [])keys
-                         count:(NSUInteger)count {
+- (instancetype)initWithObjects:(const id [])objects
+                        forKeys:(const uint64_t [])keys
+                          count:(NSUInteger)count {
   self = [super init];
   if (self) {
     _dictionary = [[NSMutableDictionary alloc] init];
-    if (count && values && keys) {
+    if (count && objects && keys) {
       for (NSUInteger i = 0; i < count; ++i) {
-        [_dictionary setObject:values[i] forKey:@(keys[i])];
+        [_dictionary setObject:objects[i] forKey:@(keys[i])];
       }
     }
   }
@@ -7152,7 +7159,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (instancetype)initWithDictionary:(GPBUInt64ObjectDictionary *)dictionary {
-  self = [self initWithValues:NULL forKeys:NULL count:0];
+  self = [self initWithObjects:NULL forKeys:NULL count:0];
   if (self) {
     if (dictionary) {
       [_dictionary addEntriesFromDictionary:dictionary->_dictionary];
@@ -7163,7 +7170,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 
 - (instancetype)initWithCapacity:(NSUInteger)numItems {
   #pragma unused(numItems)
-  return [self initWithValues:NULL forKeys:NULL count:0];
+  return [self initWithObjects:NULL forKeys:NULL count:0];
 }
 
 - (void)dealloc {
@@ -7200,12 +7207,12 @@ void GPBDictionaryReadEntry(id mapDictionary,
   return _dictionary.count;
 }
 
-- (void)enumerateKeysAndValuesUsingBlock:
-    (void (^)(uint64_t key, id value, BOOL *stop))block {
+- (void)enumerateKeysAndObjectsUsingBlock:
+    (void (^)(uint64_t key, id object, BOOL *stop))block {
   [_dictionary enumerateKeysAndObjectsUsingBlock:^(NSNumber *aKey,
-                                                   id aValue,
+                                                   id aObject,
                                                    BOOL *stop) {
-      block([aKey unsignedLongLongValue], aValue, stop);
+      block([aKey unsignedLongLongValue], aObject, stop);
   }];
 }
 
@@ -7242,11 +7249,11 @@ void GPBDictionaryReadEntry(id mapDictionary,
   GPBDataType keyDataType = field.mapKeyDataType;
   __block size_t result = 0;
   [_dictionary enumerateKeysAndObjectsUsingBlock:^(NSNumber *aKey,
-                                                   id aValue,
+                                                   id aObject,
                                                    BOOL *stop) {
     #pragma unused(stop)
     size_t msgSize = ComputeDictUInt64FieldSize([aKey unsignedLongLongValue], kMapKeyFieldNumber, keyDataType);
-    msgSize += ComputeDictObjectFieldSize(aValue, kMapValueFieldNumber, valueDataType);
+    msgSize += ComputeDictObjectFieldSize(aObject, kMapValueFieldNumber, valueDataType);
     result += GPBComputeRawVarint32SizeForInteger(msgSize) + msgSize;
   }];
   size_t tagSize = GPBComputeWireFormatTagSize(GPBFieldNumber(field), GPBDataTypeMessage);
@@ -7260,18 +7267,18 @@ void GPBDictionaryReadEntry(id mapDictionary,
   GPBDataType keyDataType = field.mapKeyDataType;
   uint32_t tag = GPBWireFormatMakeTag(GPBFieldNumber(field), GPBWireFormatLengthDelimited);
   [_dictionary enumerateKeysAndObjectsUsingBlock:^(NSNumber *aKey,
-                                                   id aValue,
+                                                   id aObject,
                                                    BOOL *stop) {
     #pragma unused(stop)
     // Write the tag.
     [outputStream writeInt32NoTag:tag];
     // Write the size of the message.
     size_t msgSize = ComputeDictUInt64FieldSize([aKey unsignedLongLongValue], kMapKeyFieldNumber, keyDataType);
-    msgSize += ComputeDictObjectFieldSize(aValue, kMapValueFieldNumber, valueDataType);
+    msgSize += ComputeDictObjectFieldSize(aObject, kMapValueFieldNumber, valueDataType);
     [outputStream writeInt32NoTag:(int32_t)msgSize];
     // Write the fields.
     WriteDictUInt64Field(outputStream, [aKey unsignedLongLongValue], kMapKeyFieldNumber, keyDataType);
-    WriteDictObjectField(outputStream, aValue, kMapValueFieldNumber, valueDataType);
+    WriteDictObjectField(outputStream, aObject, kMapValueFieldNumber, valueDataType);
   }];
 }
 
@@ -7281,13 +7288,13 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (void)enumerateForTextFormat:(void (^)(id keyObj, id valueObj))block {
-  [self enumerateKeysAndValuesUsingBlock:^(uint64_t key, id value, BOOL *stop) {
+  [self enumerateKeysAndObjectsUsingBlock:^(uint64_t key, id object, BOOL *stop) {
       #pragma unused(stop)
-      block([NSString stringWithFormat:@"%llu", key], value);
+      block([NSString stringWithFormat:@"%llu", key], object);
   }];
 }
 
-- (id)valueForKey:(uint64_t)key {
+- (id)objectForKey:(uint64_t)key {
   id result = [_dictionary objectForKey:@(key)];
   return result;
 }
@@ -7301,14 +7308,14 @@ void GPBDictionaryReadEntry(id mapDictionary,
   }
 }
 
-- (void)setValue:(id)value forKey:(uint64_t)key {
-  [_dictionary setObject:value forKey:@(key)];
+- (void)setObject:(id)object forKey:(uint64_t)key {
+  [_dictionary setObject:object forKey:@(key)];
   if (_autocreator) {
     GPBAutocreatedDictionaryModified(_autocreator, self);
   }
 }
 
-- (void)removeValueForKey:(uint64_t)aKey {
+- (void)removeObjectForKey:(uint64_t)aKey {
   [_dictionary removeObjectForKey:@(aKey)];
 }
 
@@ -7352,7 +7359,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt64UInt32Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt64UInt32Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -7558,7 +7565,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt64Int32Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt64Int32Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -7764,7 +7771,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt64UInt64Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt64UInt64Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -7970,7 +7977,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt64Int64Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt64Int64Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -8176,7 +8183,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt64BoolDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt64BoolDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -8382,7 +8389,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt64FloatDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt64FloatDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -8588,7 +8595,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt64DoubleDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt64DoubleDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -9056,30 +9063,30 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionary {
-  return [[[self alloc] initWithValues:NULL forKeys:NULL count:0] autorelease];
+  return [[[self alloc] initWithObjects:NULL forKeys:NULL count:0] autorelease];
 }
 
-+ (instancetype)dictionaryWithValue:(id)value
-                             forKey:(int64_t)key {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
++ (instancetype)dictionaryWithObject:(id)object
+                              forKey:(int64_t)key {
+  // Cast is needed so the compiler knows what class we are invoking initWithObjects:forKeys:count:
   // on to get the type correct.
-  return [[(GPBInt64ObjectDictionary*)[self alloc] initWithValues:&value
-                                                          forKeys:&key
-                                                            count:1] autorelease];
+  return [[(GPBInt64ObjectDictionary*)[self alloc] initWithObjects:&object
+                                                           forKeys:&key
+                                                             count:1] autorelease];
 }
 
-+ (instancetype)dictionaryWithValues:(const id [])values
-                             forKeys:(const int64_t [])keys
-                               count:(NSUInteger)count {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
++ (instancetype)dictionaryWithObjects:(const id [])objects
+                              forKeys:(const int64_t [])keys
+                                count:(NSUInteger)count {
+  // Cast is needed so the compiler knows what class we are invoking initWithObjects:forKeys:count:
   // on to get the type correct.
-  return [[(GPBInt64ObjectDictionary*)[self alloc] initWithValues:values
+  return [[(GPBInt64ObjectDictionary*)[self alloc] initWithObjects:objects
                                                           forKeys:keys
                                                             count:count] autorelease];
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBInt64ObjectDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBInt64ObjectDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -9089,18 +9096,18 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (instancetype)init {
-  return [self initWithValues:NULL forKeys:NULL count:0];
+  return [self initWithObjects:NULL forKeys:NULL count:0];
 }
 
-- (instancetype)initWithValues:(const id [])values
-                       forKeys:(const int64_t [])keys
-                         count:(NSUInteger)count {
+- (instancetype)initWithObjects:(const id [])objects
+                        forKeys:(const int64_t [])keys
+                          count:(NSUInteger)count {
   self = [super init];
   if (self) {
     _dictionary = [[NSMutableDictionary alloc] init];
-    if (count && values && keys) {
+    if (count && objects && keys) {
       for (NSUInteger i = 0; i < count; ++i) {
-        [_dictionary setObject:values[i] forKey:@(keys[i])];
+        [_dictionary setObject:objects[i] forKey:@(keys[i])];
       }
     }
   }
@@ -9108,7 +9115,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (instancetype)initWithDictionary:(GPBInt64ObjectDictionary *)dictionary {
-  self = [self initWithValues:NULL forKeys:NULL count:0];
+  self = [self initWithObjects:NULL forKeys:NULL count:0];
   if (self) {
     if (dictionary) {
       [_dictionary addEntriesFromDictionary:dictionary->_dictionary];
@@ -9119,7 +9126,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 
 - (instancetype)initWithCapacity:(NSUInteger)numItems {
   #pragma unused(numItems)
-  return [self initWithValues:NULL forKeys:NULL count:0];
+  return [self initWithObjects:NULL forKeys:NULL count:0];
 }
 
 - (void)dealloc {
@@ -9156,12 +9163,12 @@ void GPBDictionaryReadEntry(id mapDictionary,
   return _dictionary.count;
 }
 
-- (void)enumerateKeysAndValuesUsingBlock:
-    (void (^)(int64_t key, id value, BOOL *stop))block {
+- (void)enumerateKeysAndObjectsUsingBlock:
+    (void (^)(int64_t key, id object, BOOL *stop))block {
   [_dictionary enumerateKeysAndObjectsUsingBlock:^(NSNumber *aKey,
-                                                   id aValue,
+                                                   id aObject,
                                                    BOOL *stop) {
-      block([aKey longLongValue], aValue, stop);
+      block([aKey longLongValue], aObject, stop);
   }];
 }
 
@@ -9198,11 +9205,11 @@ void GPBDictionaryReadEntry(id mapDictionary,
   GPBDataType keyDataType = field.mapKeyDataType;
   __block size_t result = 0;
   [_dictionary enumerateKeysAndObjectsUsingBlock:^(NSNumber *aKey,
-                                                   id aValue,
+                                                   id aObject,
                                                    BOOL *stop) {
     #pragma unused(stop)
     size_t msgSize = ComputeDictInt64FieldSize([aKey longLongValue], kMapKeyFieldNumber, keyDataType);
-    msgSize += ComputeDictObjectFieldSize(aValue, kMapValueFieldNumber, valueDataType);
+    msgSize += ComputeDictObjectFieldSize(aObject, kMapValueFieldNumber, valueDataType);
     result += GPBComputeRawVarint32SizeForInteger(msgSize) + msgSize;
   }];
   size_t tagSize = GPBComputeWireFormatTagSize(GPBFieldNumber(field), GPBDataTypeMessage);
@@ -9216,18 +9223,18 @@ void GPBDictionaryReadEntry(id mapDictionary,
   GPBDataType keyDataType = field.mapKeyDataType;
   uint32_t tag = GPBWireFormatMakeTag(GPBFieldNumber(field), GPBWireFormatLengthDelimited);
   [_dictionary enumerateKeysAndObjectsUsingBlock:^(NSNumber *aKey,
-                                                   id aValue,
+                                                   id aObject,
                                                    BOOL *stop) {
     #pragma unused(stop)
     // Write the tag.
     [outputStream writeInt32NoTag:tag];
     // Write the size of the message.
     size_t msgSize = ComputeDictInt64FieldSize([aKey longLongValue], kMapKeyFieldNumber, keyDataType);
-    msgSize += ComputeDictObjectFieldSize(aValue, kMapValueFieldNumber, valueDataType);
+    msgSize += ComputeDictObjectFieldSize(aObject, kMapValueFieldNumber, valueDataType);
     [outputStream writeInt32NoTag:(int32_t)msgSize];
     // Write the fields.
     WriteDictInt64Field(outputStream, [aKey longLongValue], kMapKeyFieldNumber, keyDataType);
-    WriteDictObjectField(outputStream, aValue, kMapValueFieldNumber, valueDataType);
+    WriteDictObjectField(outputStream, aObject, kMapValueFieldNumber, valueDataType);
   }];
 }
 
@@ -9237,13 +9244,13 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (void)enumerateForTextFormat:(void (^)(id keyObj, id valueObj))block {
-  [self enumerateKeysAndValuesUsingBlock:^(int64_t key, id value, BOOL *stop) {
+  [self enumerateKeysAndObjectsUsingBlock:^(int64_t key, id object, BOOL *stop) {
       #pragma unused(stop)
-      block([NSString stringWithFormat:@"%lld", key], value);
+      block([NSString stringWithFormat:@"%lld", key], object);
   }];
 }
 
-- (id)valueForKey:(int64_t)key {
+- (id)objectForKey:(int64_t)key {
   id result = [_dictionary objectForKey:@(key)];
   return result;
 }
@@ -9257,14 +9264,14 @@ void GPBDictionaryReadEntry(id mapDictionary,
   }
 }
 
-- (void)setValue:(id)value forKey:(int64_t)key {
-  [_dictionary setObject:value forKey:@(key)];
+- (void)setObject:(id)object forKey:(int64_t)key {
+  [_dictionary setObject:object forKey:@(key)];
   if (_autocreator) {
     GPBAutocreatedDictionaryModified(_autocreator, self);
   }
 }
 
-- (void)removeValueForKey:(int64_t)aKey {
+- (void)removeObjectForKey:(int64_t)aKey {
   [_dictionary removeObjectForKey:@(aKey)];
 }
 
@@ -9308,7 +9315,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBStringUInt32Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBStringUInt32Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -9514,7 +9521,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBStringInt32Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBStringInt32Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -9720,7 +9727,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBStringUInt64Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBStringUInt64Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -9926,7 +9933,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBStringInt64Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBStringInt64Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -10132,7 +10139,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBStringBoolDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBStringBoolDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -10338,7 +10345,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBStringFloatDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBStringFloatDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -10544,7 +10551,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBStringDoubleDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBStringDoubleDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -11042,7 +11049,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBBoolUInt32Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBBoolUInt32Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -11283,7 +11290,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBBoolInt32Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBBoolInt32Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -11524,7 +11531,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBBoolUInt64Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBBoolUInt64Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -11765,7 +11772,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBBoolInt64Dictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBBoolInt64Dictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -12006,7 +12013,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBBoolBoolDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBBoolBoolDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -12247,7 +12254,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBBoolFloatDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBBoolFloatDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -12488,7 +12495,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBBoolDoubleDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBBoolDoubleDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -12705,30 +12712,30 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 + (instancetype)dictionary {
-  return [[[self alloc] initWithValues:NULL forKeys:NULL count:0] autorelease];
+  return [[[self alloc] initWithObjects:NULL forKeys:NULL count:0] autorelease];
 }
 
-+ (instancetype)dictionaryWithValue:(id)value
-                             forKey:(BOOL)key {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
++ (instancetype)dictionaryWithObject:(id)object
+                              forKey:(BOOL)key {
+  // Cast is needed so the compiler knows what class we are invoking initWithObjects:forKeys:count:
   // on to get the type correct.
-  return [[(GPBBoolObjectDictionary*)[self alloc] initWithValues:&value
-                                                         forKeys:&key
-                                                           count:1] autorelease];
+  return [[(GPBBoolObjectDictionary*)[self alloc] initWithObjects:&object
+                                                          forKeys:&key
+                                                            count:1] autorelease];
 }
 
-+ (instancetype)dictionaryWithValues:(const id [])values
-                             forKeys:(const BOOL [])keys
-                               count:(NSUInteger)count {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
++ (instancetype)dictionaryWithObjects:(const id [])objects
+                              forKeys:(const BOOL [])keys
+                                count:(NSUInteger)count {
+  // Cast is needed so the compiler knows what class we are invoking initWithObjects:forKeys:count:
   // on to get the type correct.
-  return [[(GPBBoolObjectDictionary*)[self alloc] initWithValues:values
-                                                         forKeys:keys
-                                                           count:count] autorelease];
+  return [[(GPBBoolObjectDictionary*)[self alloc] initWithObjects:objects
+                                                          forKeys:keys
+                                                            count:count] autorelease];
 }
 
 + (instancetype)dictionaryWithDictionary:(GPBBoolObjectDictionary *)dictionary {
-  // Cast is needed so the compiler knows what class we are invoking initWithValues:forKeys:count:
+  // Cast is needed so the compiler knows what class we are invoking initWithDictionary:
   // on to get the type correct.
   return [[(GPBBoolObjectDictionary*)[self alloc] initWithDictionary:dictionary] autorelease];
 }
@@ -12738,25 +12745,25 @@ void GPBDictionaryReadEntry(id mapDictionary,
 }
 
 - (instancetype)init {
-  return [self initWithValues:NULL forKeys:NULL count:0];
+  return [self initWithObjects:NULL forKeys:NULL count:0];
 }
 
-- (instancetype)initWithValues:(const id [])values
-                       forKeys:(const BOOL [])keys
-                         count:(NSUInteger)count {
+- (instancetype)initWithObjects:(const id [])objects
+                        forKeys:(const BOOL [])keys
+                          count:(NSUInteger)count {
   self = [super init];
   if (self) {
     for (NSUInteger i = 0; i < count; ++i) {
       int idx = keys[i] ? 1 : 0;
       [_values[idx] release];
-      _values[idx] = (id)[values[i] retain];
+      _values[idx] = (id)[objects[i] retain];
     }
   }
   return self;
 }
 
 - (instancetype)initWithDictionary:(GPBBoolObjectDictionary *)dictionary {
-  self = [self initWithValues:NULL forKeys:NULL count:0];
+  self = [self initWithObjects:NULL forKeys:NULL count:0];
   if (self) {
     if (dictionary) {
       _values[0] = [dictionary->_values[0] retain];
@@ -12768,7 +12775,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
 
 - (instancetype)initWithCapacity:(NSUInteger)numItems {
   #pragma unused(numItems)
-  return [self initWithValues:NULL forKeys:NULL count:0];
+  return [self initWithObjects:NULL forKeys:NULL count:0];
 }
 
 - (void)dealloc {
@@ -12822,7 +12829,7 @@ void GPBDictionaryReadEntry(id mapDictionary,
   return ((_values[0] != nil) ? 1 : 0) + ((_values[1] != nil) ? 1 : 0);
 }
 
-- (id)valueForKey:(BOOL)key {
+- (id)objectForKey:(BOOL)key {
   return _values[key ? 1 : 0];
 }
 
@@ -12842,8 +12849,8 @@ void GPBDictionaryReadEntry(id mapDictionary,
   }
 }
 
-- (void)enumerateKeysAndValuesUsingBlock:
-    (void (^)(BOOL key, id value, BOOL *stop))block {
+- (void)enumerateKeysAndObjectsUsingBlock:
+    (void (^)(BOOL key, id object, BOOL *stop))block {
   BOOL stop = NO;
   if (_values[0] != nil) {
     block(NO, _values[0], &stop);
@@ -12924,16 +12931,16 @@ void GPBDictionaryReadEntry(id mapDictionary,
   }
 }
 
-- (void)setValue:(id)value forKey:(BOOL)key {
+- (void)setObject:(id)object forKey:(BOOL)key {
   int idx = (key ? 1 : 0);
   [_values[idx] release];
-  _values[idx] = [value retain];
+  _values[idx] = [object retain];
   if (_autocreator) {
     GPBAutocreatedDictionaryModified(_autocreator, self);
   }
 }
 
-- (void)removeValueForKey:(BOOL)aKey {
+- (void)removeObjectForKey:(BOOL)aKey {
   int idx = (aKey ? 1 : 0);
   [_values[idx] release];
   _values[idx] = nil;
diff --git a/objectivec/ProtocolBuffers_OSX.xcodeproj/project.pbxproj b/objectivec/ProtocolBuffers_OSX.xcodeproj/project.pbxproj
index b0a0712e..08d0b7ef 100644
--- a/objectivec/ProtocolBuffers_OSX.xcodeproj/project.pbxproj
+++ b/objectivec/ProtocolBuffers_OSX.xcodeproj/project.pbxproj
@@ -58,6 +58,7 @@
 		F4487C831AAF6AB300531423 /* GPBMessageTests+Merge.m in Sources */ = {isa = PBXBuildFile; fileRef = F4487C821AAF6AB300531423 /* GPBMessageTests+Merge.m */; };
 		F45C69CC16DFD08D0081955B /* GPBExtensionInternals.m in Sources */ = {isa = PBXBuildFile; fileRef = F45C69CB16DFD08D0081955B /* GPBExtensionInternals.m */; };
 		F45E57C71AE6DC6A000B7D99 /* text_format_map_unittest_data.txt in Resources */ = {isa = PBXBuildFile; fileRef = F45E57C61AE6DC6A000B7D99 /* text_format_map_unittest_data.txt */; };
+		F4B51B1E1BBC610700744318 /* GPBObjectiveCPlusPlusTest.mm in Sources */ = {isa = PBXBuildFile; fileRef = F4B51B1D1BBC610700744318 /* GPBObjectiveCPlusPlusTest.mm */; };
 		F4E675971B21D0000054530B /* Any.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = F4E675871B21D0000054530B /* Any.pbobjc.m */; };
 		F4E675991B21D0000054530B /* Api.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = F4E675891B21D0000054530B /* Api.pbobjc.m */; };
 		F4E6759B1B21D0000054530B /* Empty.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = F4E6758B1B21D0000054530B /* Empty.pbobjc.m */; };
@@ -193,6 +194,7 @@
 		F45C69CB16DFD08D0081955B /* GPBExtensionInternals.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GPBExtensionInternals.m; sourceTree = "<group>"; };
 		F45E57C61AE6DC6A000B7D99 /* text_format_map_unittest_data.txt */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = text_format_map_unittest_data.txt; sourceTree = "<group>"; };
 		F4AC9E1D1A8BEB3500BD6E83 /* unittest_cycle.proto */ = {isa = PBXFileReference; lastKnownFileType = text; path = unittest_cycle.proto; sourceTree = "<group>"; };
+		F4B51B1D1BBC610700744318 /* GPBObjectiveCPlusPlusTest.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = GPBObjectiveCPlusPlusTest.mm; sourceTree = "<group>"; };
 		F4B6B8AF1A9CC98000892426 /* GPBUnknownField_PackagePrivate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GPBUnknownField_PackagePrivate.h; sourceTree = "<group>"; };
 		F4B6B8B21A9CCBDA00892426 /* GPBUnknownFieldSet_PackagePrivate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GPBUnknownFieldSet_PackagePrivate.h; sourceTree = "<group>"; };
 		F4B6B8B61A9CD1DE00892426 /* GPBExtensionInternals.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GPBExtensionInternals.h; sourceTree = "<group>"; };
@@ -415,6 +417,7 @@
 				F4487C821AAF6AB300531423 /* GPBMessageTests+Merge.m */,
 				F4487C741AADF7F500531423 /* GPBMessageTests+Runtime.m */,
 				F4487C7E1AAF62CD00531423 /* GPBMessageTests+Serialization.m */,
+				F4B51B1D1BBC610700744318 /* GPBObjectiveCPlusPlusTest.mm */,
 				F41C175C1833D3310064ED4D /* GPBPerfTests.m */,
 				8BA9364418DA5F4B0056FA2A /* GPBStringTests.m */,
 				8B4248BA1A8C256A00BC1EC6 /* GPBSwiftTests.swift */,
@@ -668,6 +671,7 @@
 				8BBEA4AA147C727D00C4ADB7 /* GPBCodedOuputStreamTests.m in Sources */,
 				F4E675B21B21D0A70054530B /* SourceContext.pbobjc.m in Sources */,
 				8BBEA4AC147C727D00C4ADB7 /* GPBMessageTests.m in Sources */,
+				F4B51B1E1BBC610700744318 /* GPBObjectiveCPlusPlusTest.mm in Sources */,
 				F4487C7F1AAF62CD00531423 /* GPBMessageTests+Serialization.m in Sources */,
 				8B4248DC1A92933A00BC1EC6 /* GPBWellKnownTypesTest.m in Sources */,
 				F4E675B01B21D0A70054530B /* Empty.pbobjc.m in Sources */,
diff --git a/objectivec/ProtocolBuffers_iOS.xcodeproj/project.pbxproj b/objectivec/ProtocolBuffers_iOS.xcodeproj/project.pbxproj
index 23e9f169..14e51037 100644
--- a/objectivec/ProtocolBuffers_iOS.xcodeproj/project.pbxproj
+++ b/objectivec/ProtocolBuffers_iOS.xcodeproj/project.pbxproj
@@ -66,6 +66,7 @@
 		F4487C851AAF6AC500531423 /* GPBMessageTests+Merge.m in Sources */ = {isa = PBXBuildFile; fileRef = F4487C841AAF6AC500531423 /* GPBMessageTests+Merge.m */; };
 		F45C69CC16DFD08D0081955B /* GPBExtensionInternals.m in Sources */ = {isa = PBXBuildFile; fileRef = F45C69CB16DFD08D0081955B /* GPBExtensionInternals.m */; };
 		F45E57C91AE6DC98000B7D99 /* text_format_map_unittest_data.txt in Resources */ = {isa = PBXBuildFile; fileRef = F45E57C81AE6DC98000B7D99 /* text_format_map_unittest_data.txt */; };
+		F4B51B1C1BBC5C7100744318 /* GPBObjectiveCPlusPlusTest.mm in Sources */ = {isa = PBXBuildFile; fileRef = F4B51B1B1BBC5C7100744318 /* GPBObjectiveCPlusPlusTest.mm */; };
 		F4E675C81B21D1610054530B /* Any.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = F4E675B71B21D1440054530B /* Any.pbobjc.m */; };
 		F4E675C91B21D1610054530B /* Api.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = F4E675B91B21D1440054530B /* Api.pbobjc.m */; };
 		F4E675CA1B21D1610054530B /* Empty.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = F4E675BC1B21D1440054530B /* Empty.pbobjc.m */; };
@@ -214,6 +215,7 @@
 		F45C69CB16DFD08D0081955B /* GPBExtensionInternals.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GPBExtensionInternals.m; sourceTree = "<group>"; };
 		F45E57C81AE6DC98000B7D99 /* text_format_map_unittest_data.txt */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = text_format_map_unittest_data.txt; sourceTree = "<group>"; };
 		F4AC9E1C1A8BEB1000BD6E83 /* unittest_cycle.proto */ = {isa = PBXFileReference; lastKnownFileType = text; path = unittest_cycle.proto; sourceTree = "<group>"; };
+		F4B51B1B1BBC5C7100744318 /* GPBObjectiveCPlusPlusTest.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = GPBObjectiveCPlusPlusTest.mm; sourceTree = "<group>"; };
 		F4B6B8B01A9CC99500892426 /* GPBUnknownField_PackagePrivate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GPBUnknownField_PackagePrivate.h; sourceTree = "<group>"; };
 		F4B6B8B11A9CCBBB00892426 /* GPBUnknownFieldSet_PackagePrivate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GPBUnknownFieldSet_PackagePrivate.h; sourceTree = "<group>"; };
 		F4B6B8B31A9CD1C600892426 /* GPBExtensionInternals.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GPBExtensionInternals.h; sourceTree = "<group>"; };
@@ -453,6 +455,7 @@
 				F4487C841AAF6AC500531423 /* GPBMessageTests+Merge.m */,
 				F4487C761AADF84900531423 /* GPBMessageTests+Runtime.m */,
 				F4487C801AAF62FC00531423 /* GPBMessageTests+Serialization.m */,
+				F4B51B1B1BBC5C7100744318 /* GPBObjectiveCPlusPlusTest.mm */,
 				F41C175C1833D3310064ED4D /* GPBPerfTests.m */,
 				8BA9364418DA5F4B0056FA2A /* GPBStringTests.m */,
 				8B4248B31A8BD96E00BC1EC6 /* GPBSwiftTests.swift */,
@@ -770,6 +773,7 @@
 				F4E675CE1B21D1610054530B /* Type.pbobjc.m in Sources */,
 				F4353D1F1AB88243005A6198 /* GPBDescriptorTests.m in Sources */,
 				F4E675CF1B21D1610054530B /* Wrappers.pbobjc.m in Sources */,
+				F4B51B1C1BBC5C7100744318 /* GPBObjectiveCPlusPlusTest.mm in Sources */,
 				F4E675C81B21D1610054530B /* Any.pbobjc.m in Sources */,
 				8B4248B41A8BD96E00BC1EC6 /* GPBSwiftTests.swift in Sources */,
 				5102DABC1891A073002037B6 /* GPBConcurrencyTests.m in Sources */,
diff --git a/objectivec/Tests/GPBDictionaryTests+Bool.m b/objectivec/Tests/GPBDictionaryTests+Bool.m
index 43650f51..8b1900fe 100644
--- a/objectivec/Tests/GPBDictionaryTests+Bool.m
+++ b/objectivec/Tests/GPBDictionaryTests+Bool.m
@@ -167,10 +167,10 @@
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 Fewer pairs; not equal
@@ -468,10 +468,10 @@
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 Fewer pairs; not equal
@@ -769,10 +769,10 @@
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 Fewer pairs; not equal
@@ -1070,10 +1070,10 @@
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 Fewer pairs; not equal
@@ -1371,10 +1371,10 @@
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 Fewer pairs; not equal
@@ -1672,10 +1672,10 @@
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 Fewer pairs; not equal
@@ -1973,10 +1973,10 @@
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 Fewer pairs; not equal
@@ -2161,46 +2161,46 @@
   GPBBoolObjectDictionary *dict = [[GPBBoolObjectDictionary alloc] init];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 0U);
-  XCTAssertNil([dict valueForKey:YES]);
-  [dict enumerateKeysAndValuesUsingBlock:^(BOOL aKey, id aValue, BOOL *stop) {
-    #pragma unused(aKey, aValue, stop)
+  XCTAssertNil([dict objectForKey:YES]);
+  [dict enumerateKeysAndObjectsUsingBlock:^(BOOL aKey, id aObject, BOOL *stop) {
+    #pragma unused(aKey, aObject, stop)
     XCTFail(@"Shouldn't get here!");
   }];
   [dict release];
 }
 
 - (void)testOne {
-  GPBBoolObjectDictionary *dict = [GPBBoolObjectDictionary dictionaryWithValue:@"abc" forKey:YES];
+  GPBBoolObjectDictionary *dict = [GPBBoolObjectDictionary dictionaryWithObject:@"abc" forKey:YES];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 1U);
-  XCTAssertEqualObjects([dict valueForKey:YES], @"abc");
-  XCTAssertNil([dict valueForKey:NO]);
-  [dict enumerateKeysAndValuesUsingBlock:^(BOOL aKey, id aValue, BOOL *stop) {
+  XCTAssertEqualObjects([dict objectForKey:YES], @"abc");
+  XCTAssertNil([dict objectForKey:NO]);
+  [dict enumerateKeysAndObjectsUsingBlock:^(BOOL aKey, id aObject, BOOL *stop) {
     XCTAssertEqual(aKey, YES);
-    XCTAssertEqualObjects(aValue, @"abc");
+    XCTAssertEqualObjects(aObject, @"abc");
     XCTAssertNotEqual(stop, NULL);
   }];
 }
 
 - (void)testBasics {
   const BOOL kKeys[] = { YES, NO };
-  const id kValues[] = { @"abc", @"def" };
+  const id kObjects[] = { @"abc", @"def" };
   GPBBoolObjectDictionary *dict =
-      [[GPBBoolObjectDictionary alloc] initWithValues:kValues
-                                              forKeys:kKeys
-                                                count:GPBARRAYSIZE(kValues)];
+      [[GPBBoolObjectDictionary alloc] initWithObjects:kObjects
+                                               forKeys:kKeys
+                                                 count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 2U);
-  XCTAssertEqualObjects([dict valueForKey:YES], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:NO], @"def");
+  XCTAssertEqualObjects([dict objectForKey:YES], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:NO], @"def");
 
   __block NSUInteger idx = 0;
   BOOL *seenKeys = malloc(2 * sizeof(BOOL));
-  id *seenValues = malloc(2 * sizeof(id));
-  [dict enumerateKeysAndValuesUsingBlock:^(BOOL aKey, id aValue, BOOL *stop) {
+  id *seenObjects = malloc(2 * sizeof(id));
+  [dict enumerateKeysAndObjectsUsingBlock:^(BOOL aKey, id aObject, BOOL *stop) {
     XCTAssertLessThan(idx, 2U);
     seenKeys[idx] = aKey;
-    seenValues[idx] = aValue;
+    seenObjects[idx] = aObject;
     XCTAssertNotEqual(stop, NULL);
     ++idx;
   }];
@@ -2209,18 +2209,18 @@
     for (int j = 0; (j < 2) && !foundKey; ++j) {
       if (kKeys[i] == seenKeys[j]) {
         foundKey = YES;
-        XCTAssertEqualObjects(kValues[i], seenValues[j], @"i = %d, j = %d", i, j);
+        XCTAssertEqualObjects(kObjects[i], seenObjects[j], @"i = %d, j = %d", i, j);
       }
     }
     XCTAssertTrue(foundKey, @"i = %d", i);
   }
   free(seenKeys);
-  free(seenValues);
+  free(seenObjects);
 
   // Stopping the enumeration.
   idx = 0;
-  [dict enumerateKeysAndValuesUsingBlock:^(BOOL aKey, id aValue, BOOL *stop) {
-    #pragma unused(aKey, aValue)
+  [dict enumerateKeysAndObjectsUsingBlock:^(BOOL aKey, id aObject, BOOL *stop) {
+    #pragma unused(aKey, aObject)
     if (idx == 0) *stop = YES;
     XCTAssertNotEqual(idx, 2U);
     ++idx;
@@ -2231,33 +2231,33 @@
 - (void)testEquality {
   const BOOL kKeys1[] = { YES, NO };
   const BOOL kKeys2[] = { NO, YES };
-  const id kValues1[] = { @"abc", @"def" };
-  const id kValues2[] = { @"def", @"abc" };
-  const id kValues3[] = { @"def" };
+  const id kObjects1[] = { @"abc", @"def" };
+  const id kObjects2[] = { @"def", @"abc" };
+  const id kObjects3[] = { @"def" };
   GPBBoolObjectDictionary *dict1 =
-      [[GPBBoolObjectDictionary alloc] initWithValues:kValues1
-                                              forKeys:kKeys1
-                                                count:GPBARRAYSIZE(kValues1)];
+      [[GPBBoolObjectDictionary alloc] initWithObjects:kObjects1
+                                               forKeys:kKeys1
+                                                 count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict1);
   GPBBoolObjectDictionary *dict1prime =
-      [[GPBBoolObjectDictionary alloc] initWithValues:kValues1
-                                              forKeys:kKeys1
-                                                count:GPBARRAYSIZE(kValues1)];
+      [[GPBBoolObjectDictionary alloc] initWithObjects:kObjects1
+                                               forKeys:kKeys1
+                                                 count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict1prime);
   GPBBoolObjectDictionary *dict2 =
-      [[GPBBoolObjectDictionary alloc] initWithValues:kValues2
-                                              forKeys:kKeys1
-                                                count:GPBARRAYSIZE(kValues2)];
+      [[GPBBoolObjectDictionary alloc] initWithObjects:kObjects2
+                                               forKeys:kKeys1
+                                                 count:GPBARRAYSIZE(kObjects2)];
   XCTAssertNotNil(dict2);
   GPBBoolObjectDictionary *dict3 =
-      [[GPBBoolObjectDictionary alloc] initWithValues:kValues1
-                                              forKeys:kKeys2
-                                                count:GPBARRAYSIZE(kValues1)];
+      [[GPBBoolObjectDictionary alloc] initWithObjects:kObjects1
+                                               forKeys:kKeys2
+                                                 count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict3);
   GPBBoolObjectDictionary *dict4 =
-      [[GPBBoolObjectDictionary alloc] initWithValues:kValues3
-                                              forKeys:kKeys1
-                                                count:GPBARRAYSIZE(kValues3)];
+      [[GPBBoolObjectDictionary alloc] initWithObjects:kObjects3
+                                               forKeys:kKeys1
+                                                 count:GPBARRAYSIZE(kObjects3)];
   XCTAssertNotNil(dict4);
 
   // 1/1Prime should be different objects, but equal.
@@ -2266,10 +2266,10 @@
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different objects; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same objects; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 Fewer pairs; not equal
@@ -2284,11 +2284,11 @@
 
 - (void)testCopy {
   const BOOL kKeys[] = { YES, NO };
-  const id kValues[] = { @"abc", @"def" };
+  const id kObjects[] = { @"abc", @"def" };
   GPBBoolObjectDictionary *dict =
-      [[GPBBoolObjectDictionary alloc] initWithValues:kValues
-                                              forKeys:kKeys
-                                                count:GPBARRAYSIZE(kValues)];
+      [[GPBBoolObjectDictionary alloc] initWithObjects:kObjects
+                                               forKeys:kKeys
+                                                 count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
 
   GPBBoolObjectDictionary *dict2 = [dict copy];
@@ -2305,11 +2305,11 @@
 
 - (void)testDictionaryFromDictionary {
   const BOOL kKeys[] = { YES, NO };
-  const id kValues[] = { @"abc", @"def" };
+  const id kObjects[] = { @"abc", @"def" };
   GPBBoolObjectDictionary *dict =
-      [[GPBBoolObjectDictionary alloc] initWithValues:kValues
-                                              forKeys:kKeys
-                                                count:GPBARRAYSIZE(kValues)];
+      [[GPBBoolObjectDictionary alloc] initWithObjects:kObjects
+                                               forKeys:kKeys
+                                                 count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
 
   GPBBoolObjectDictionary *dict2 =
@@ -2327,85 +2327,85 @@
   XCTAssertNotNil(dict);
 
   XCTAssertEqual(dict.count, 0U);
-  [dict setValue:@"abc" forKey:YES];
+  [dict setObject:@"abc" forKey:YES];
   XCTAssertEqual(dict.count, 1U);
 
   const BOOL kKeys[] = { NO };
-  const id kValues[] = { @"def" };
+  const id kObjects[] = { @"def" };
   GPBBoolObjectDictionary *dict2 =
-      [[GPBBoolObjectDictionary alloc] initWithValues:kValues
-                                              forKeys:kKeys
-                                                count:GPBARRAYSIZE(kValues)];
+      [[GPBBoolObjectDictionary alloc] initWithObjects:kObjects
+                                               forKeys:kKeys
+                                                 count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict2);
   [dict addEntriesFromDictionary:dict2];
   XCTAssertEqual(dict.count, 2U);
 
-  XCTAssertEqualObjects([dict valueForKey:YES], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:NO], @"def");
+  XCTAssertEqualObjects([dict objectForKey:YES], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:NO], @"def");
   [dict2 release];
 }
 
 - (void)testRemove {
   const BOOL kKeys[] = { YES, NO};
-  const id kValues[] = { @"abc", @"def" };
+  const id kObjects[] = { @"abc", @"def" };
   GPBBoolObjectDictionary *dict =
-      [[GPBBoolObjectDictionary alloc] initWithValues:kValues
-                                       forKeys:kKeys
-                                         count:GPBARRAYSIZE(kValues)];
+      [[GPBBoolObjectDictionary alloc] initWithObjects:kObjects
+                                        forKeys:kKeys
+                                          count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 2U);
 
-  [dict removeValueForKey:NO];
+  [dict removeObjectForKey:NO];
   XCTAssertEqual(dict.count, 1U);
-  XCTAssertEqualObjects([dict valueForKey:YES], @"abc");
-  XCTAssertNil([dict valueForKey:NO]);
+  XCTAssertEqualObjects([dict objectForKey:YES], @"abc");
+  XCTAssertNil([dict objectForKey:NO]);
 
   // Remove again does nothing.
-  [dict removeValueForKey:NO];
+  [dict removeObjectForKey:NO];
   XCTAssertEqual(dict.count, 1U);
-  XCTAssertEqualObjects([dict valueForKey:YES], @"abc");
-  XCTAssertNil([dict valueForKey:NO]);
+  XCTAssertEqualObjects([dict objectForKey:YES], @"abc");
+  XCTAssertNil([dict objectForKey:NO]);
 
   [dict removeAll];
   XCTAssertEqual(dict.count, 0U);
-  XCTAssertNil([dict valueForKey:YES]);
-  XCTAssertNil([dict valueForKey:NO]);
+  XCTAssertNil([dict objectForKey:YES]);
+  XCTAssertNil([dict objectForKey:NO]);
   [dict release];
 }
 
 - (void)testInplaceMutation {
   const BOOL kKeys[] = { YES, NO };
-  const id kValues[] = { @"abc", @"def" };
+  const id kObjects[] = { @"abc", @"def" };
   GPBBoolObjectDictionary *dict =
-      [[GPBBoolObjectDictionary alloc] initWithValues:kValues
-                                       forKeys:kKeys
-                                         count:GPBARRAYSIZE(kValues)];
+      [[GPBBoolObjectDictionary alloc] initWithObjects:kObjects
+                                        forKeys:kKeys
+                                          count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 2U);
-  XCTAssertEqualObjects([dict valueForKey:YES], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:NO], @"def");
+  XCTAssertEqualObjects([dict objectForKey:YES], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:NO], @"def");
 
-  [dict setValue:@"def" forKey:YES];
+  [dict setObject:@"def" forKey:YES];
   XCTAssertEqual(dict.count, 2U);
-  XCTAssertEqualObjects([dict valueForKey:YES], @"def");
-  XCTAssertEqualObjects([dict valueForKey:NO], @"def");
+  XCTAssertEqualObjects([dict objectForKey:YES], @"def");
+  XCTAssertEqualObjects([dict objectForKey:NO], @"def");
 
-  [dict setValue:@"abc" forKey:NO];
+  [dict setObject:@"abc" forKey:NO];
   XCTAssertEqual(dict.count, 2U);
-  XCTAssertEqualObjects([dict valueForKey:YES], @"def");
-  XCTAssertEqualObjects([dict valueForKey:NO], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:YES], @"def");
+  XCTAssertEqualObjects([dict objectForKey:NO], @"abc");
 
   const BOOL kKeys2[] = { NO, YES };
-  const id kValues2[] = { @"def", @"abc" };
+  const id kObjects2[] = { @"def", @"abc" };
   GPBBoolObjectDictionary *dict2 =
-      [[GPBBoolObjectDictionary alloc] initWithValues:kValues2
-                                              forKeys:kKeys2
-                                                count:GPBARRAYSIZE(kValues2)];
+      [[GPBBoolObjectDictionary alloc] initWithObjects:kObjects2
+                                               forKeys:kKeys2
+                                                 count:GPBARRAYSIZE(kObjects2)];
   XCTAssertNotNil(dict2);
   [dict addEntriesFromDictionary:dict2];
   XCTAssertEqual(dict.count, 2U);
-  XCTAssertEqualObjects([dict valueForKey:YES], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:NO], @"def");
+  XCTAssertEqualObjects([dict objectForKey:YES], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:NO], @"def");
 
   [dict2 release];
   [dict release];
diff --git a/objectivec/Tests/GPBDictionaryTests+Int32.m b/objectivec/Tests/GPBDictionaryTests+Int32.m
index 1ee099ee..21d3f07d 100644
--- a/objectivec/Tests/GPBDictionaryTests+Int32.m
+++ b/objectivec/Tests/GPBDictionaryTests+Int32.m
@@ -211,10 +211,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -568,10 +568,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -925,10 +925,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1282,10 +1282,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1639,10 +1639,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1996,10 +1996,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -2353,10 +2353,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -2710,10 +2710,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3071,10 +3071,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3366,48 +3366,48 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   GPBInt32ObjectDictionary *dict = [[GPBInt32ObjectDictionary alloc] init];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 0U);
-  XCTAssertNil([dict valueForKey:11]);
-  [dict enumerateKeysAndValuesUsingBlock:^(int32_t aKey, id aValue, BOOL *stop) {
-    #pragma unused(aKey, aValue, stop)
+  XCTAssertNil([dict objectForKey:11]);
+  [dict enumerateKeysAndObjectsUsingBlock:^(int32_t aKey, id aObject, BOOL *stop) {
+    #pragma unused(aKey, aObject, stop)
     XCTFail(@"Shouldn't get here!");
   }];
   [dict release];
 }
 
 - (void)testOne {
-  GPBInt32ObjectDictionary *dict = [GPBInt32ObjectDictionary dictionaryWithValue:@"abc" forKey:11];
+  GPBInt32ObjectDictionary *dict = [GPBInt32ObjectDictionary dictionaryWithObject:@"abc" forKey:11];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 1U);
-  XCTAssertEqualObjects([dict valueForKey:11], @"abc");
-  XCTAssertNil([dict valueForKey:12]);
-  [dict enumerateKeysAndValuesUsingBlock:^(int32_t aKey, id aValue, BOOL *stop) {
+  XCTAssertEqualObjects([dict objectForKey:11], @"abc");
+  XCTAssertNil([dict objectForKey:12]);
+  [dict enumerateKeysAndObjectsUsingBlock:^(int32_t aKey, id aObject, BOOL *stop) {
     XCTAssertEqual(aKey, 11);
-    XCTAssertEqualObjects(aValue, @"abc");
+    XCTAssertEqualObjects(aObject, @"abc");
     XCTAssertNotEqual(stop, NULL);
   }];
 }
 
 - (void)testBasics {
   const int32_t kKeys[] = { 11, 12, 13 };
-  const id kValues[] = { @"abc", @"def", @"ghi" };
+  const id kObjects[] = { @"abc", @"def", @"ghi" };
   GPBInt32ObjectDictionary *dict =
-      [[GPBInt32ObjectDictionary alloc] initWithValues:kValues
-                                               forKeys:kKeys
-                                                 count:GPBARRAYSIZE(kValues)];
+      [[GPBInt32ObjectDictionary alloc] initWithObjects:kObjects
+                                                forKeys:kKeys
+                                                  count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 3U);
-  XCTAssertEqualObjects([dict valueForKey:11], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:12], @"def");
-  XCTAssertEqualObjects([dict valueForKey:13], @"ghi");
-  XCTAssertNil([dict valueForKey:14]);
+  XCTAssertEqualObjects([dict objectForKey:11], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:12], @"def");
+  XCTAssertEqualObjects([dict objectForKey:13], @"ghi");
+  XCTAssertNil([dict objectForKey:14]);
 
   __block NSUInteger idx = 0;
   int32_t *seenKeys = malloc(3 * sizeof(int32_t));
-  id *seenValues = malloc(3 * sizeof(id));
-  [dict enumerateKeysAndValuesUsingBlock:^(int32_t aKey, id aValue, BOOL *stop) {
+  id *seenObjects = malloc(3 * sizeof(id));
+  [dict enumerateKeysAndObjectsUsingBlock:^(int32_t aKey, id aObject, BOOL *stop) {
     XCTAssertLessThan(idx, 3U);
     seenKeys[idx] = aKey;
-    seenValues[idx] = aValue;
+    seenObjects[idx] = aObject;
     XCTAssertNotEqual(stop, NULL);
     ++idx;
   }];
@@ -3416,18 +3416,18 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
     for (int j = 0; (j < 3) && !foundKey; ++j) {
       if (kKeys[i] == seenKeys[j]) {
         foundKey = YES;
-        XCTAssertEqualObjects(kValues[i], seenValues[j], @"i = %d, j = %d", i, j);
+        XCTAssertEqualObjects(kObjects[i], seenObjects[j], @"i = %d, j = %d", i, j);
       }
     }
     XCTAssertTrue(foundKey, @"i = %d", i);
   }
   free(seenKeys);
-  free(seenValues);
+  free(seenObjects);
 
   // Stopping the enumeration.
   idx = 0;
-  [dict enumerateKeysAndValuesUsingBlock:^(int32_t aKey, id aValue, BOOL *stop) {
-    #pragma unused(aKey, aValue)
+  [dict enumerateKeysAndObjectsUsingBlock:^(int32_t aKey, id aObject, BOOL *stop) {
+    #pragma unused(aKey, aObject)
     if (idx == 1) *stop = YES;
     XCTAssertNotEqual(idx, 2U);
     ++idx;
@@ -3438,33 +3438,33 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
 - (void)testEquality {
   const int32_t kKeys1[] = { 11, 12, 13, 14 };
   const int32_t kKeys2[] = { 12, 11, 14 };
-  const id kValues1[] = { @"abc", @"def", @"ghi" };
-  const id kValues2[] = { @"abc", @"jkl", @"ghi" };
-  const id kValues3[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects1[] = { @"abc", @"def", @"ghi" };
+  const id kObjects2[] = { @"abc", @"jkl", @"ghi" };
+  const id kObjects3[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBInt32ObjectDictionary *dict1 =
-      [[GPBInt32ObjectDictionary alloc] initWithValues:kValues1
-                                               forKeys:kKeys1
-                                                 count:GPBARRAYSIZE(kValues1)];
+      [[GPBInt32ObjectDictionary alloc] initWithObjects:kObjects1
+                                                forKeys:kKeys1
+                                                  count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict1);
   GPBInt32ObjectDictionary *dict1prime =
-      [[GPBInt32ObjectDictionary alloc] initWithValues:kValues1
-                                               forKeys:kKeys1
-                                                 count:GPBARRAYSIZE(kValues1)];
+      [[GPBInt32ObjectDictionary alloc] initWithObjects:kObjects1
+                                                forKeys:kKeys1
+                                                  count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict1prime);
   GPBInt32ObjectDictionary *dict2 =
-      [[GPBInt32ObjectDictionary alloc] initWithValues:kValues2
-                                               forKeys:kKeys1
-                                                 count:GPBARRAYSIZE(kValues2)];
+      [[GPBInt32ObjectDictionary alloc] initWithObjects:kObjects2
+                                                forKeys:kKeys1
+                                                  count:GPBARRAYSIZE(kObjects2)];
   XCTAssertNotNil(dict2);
   GPBInt32ObjectDictionary *dict3 =
-      [[GPBInt32ObjectDictionary alloc] initWithValues:kValues1
-                                               forKeys:kKeys2
-                                                 count:GPBARRAYSIZE(kValues1)];
+      [[GPBInt32ObjectDictionary alloc] initWithObjects:kObjects1
+                                                forKeys:kKeys2
+                                                  count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict3);
   GPBInt32ObjectDictionary *dict4 =
-      [[GPBInt32ObjectDictionary alloc] initWithValues:kValues3
-                                               forKeys:kKeys1
-                                                 count:GPBARRAYSIZE(kValues3)];
+      [[GPBInt32ObjectDictionary alloc] initWithObjects:kObjects3
+                                                forKeys:kKeys1
+                                                  count:GPBARRAYSIZE(kObjects3)];
   XCTAssertNotNil(dict4);
 
   // 1/1Prime should be different objects, but equal.
@@ -3473,10 +3473,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different objects; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same objects; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3491,11 +3491,11 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
 
 - (void)testCopy {
   const int32_t kKeys[] = { 11, 12, 13, 14 };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBInt32ObjectDictionary *dict =
-      [[GPBInt32ObjectDictionary alloc] initWithValues:kValues
-                                               forKeys:kKeys
-                                                 count:GPBARRAYSIZE(kValues)];
+      [[GPBInt32ObjectDictionary alloc] initWithObjects:kObjects
+                                                forKeys:kKeys
+                                                  count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
 
   GPBInt32ObjectDictionary *dict2 = [dict copy];
@@ -3512,11 +3512,11 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
 
 - (void)testDictionaryFromDictionary {
   const int32_t kKeys[] = { 11, 12, 13, 14 };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBInt32ObjectDictionary *dict =
-      [[GPBInt32ObjectDictionary alloc] initWithValues:kValues
-                                               forKeys:kKeys
-                                                 count:GPBARRAYSIZE(kValues)];
+      [[GPBInt32ObjectDictionary alloc] initWithObjects:kObjects
+                                                forKeys:kKeys
+                                                  count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
 
   GPBInt32ObjectDictionary *dict2 =
@@ -3534,108 +3534,108 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   XCTAssertNotNil(dict);
 
   XCTAssertEqual(dict.count, 0U);
-  [dict setValue:@"abc" forKey:11];
+  [dict setObject:@"abc" forKey:11];
   XCTAssertEqual(dict.count, 1U);
 
   const int32_t kKeys[] = { 12, 13, 14 };
-  const id kValues[] = { @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"def", @"ghi", @"jkl" };
   GPBInt32ObjectDictionary *dict2 =
-      [[GPBInt32ObjectDictionary alloc] initWithValues:kValues
-                                               forKeys:kKeys
-                                                 count:GPBARRAYSIZE(kValues)];
+      [[GPBInt32ObjectDictionary alloc] initWithObjects:kObjects
+                                                forKeys:kKeys
+                                                  count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict2);
   [dict addEntriesFromDictionary:dict2];
   XCTAssertEqual(dict.count, 4U);
 
-  XCTAssertEqualObjects([dict valueForKey:11], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:12], @"def");
-  XCTAssertEqualObjects([dict valueForKey:13], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:14], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:11], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:12], @"def");
+  XCTAssertEqualObjects([dict objectForKey:13], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:14], @"jkl");
   [dict2 release];
 }
 
 - (void)testRemove {
   const int32_t kKeys[] = { 11, 12, 13, 14 };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBInt32ObjectDictionary *dict =
-      [[GPBInt32ObjectDictionary alloc] initWithValues:kValues
-                                        forKeys:kKeys
-                                          count:GPBARRAYSIZE(kValues)];
+      [[GPBInt32ObjectDictionary alloc] initWithObjects:kObjects
+                                         forKeys:kKeys
+                                           count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 4U);
 
-  [dict removeValueForKey:12];
+  [dict removeObjectForKey:12];
   XCTAssertEqual(dict.count, 3U);
-  XCTAssertEqualObjects([dict valueForKey:11], @"abc");
-  XCTAssertNil([dict valueForKey:12]);
-  XCTAssertEqualObjects([dict valueForKey:13], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:14], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:11], @"abc");
+  XCTAssertNil([dict objectForKey:12]);
+  XCTAssertEqualObjects([dict objectForKey:13], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:14], @"jkl");
 
   // Remove again does nothing.
-  [dict removeValueForKey:12];
+  [dict removeObjectForKey:12];
   XCTAssertEqual(dict.count, 3U);
-  XCTAssertEqualObjects([dict valueForKey:11], @"abc");
-  XCTAssertNil([dict valueForKey:12]);
-  XCTAssertEqualObjects([dict valueForKey:13], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:14], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:11], @"abc");
+  XCTAssertNil([dict objectForKey:12]);
+  XCTAssertEqualObjects([dict objectForKey:13], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:14], @"jkl");
 
-  [dict removeValueForKey:14];
+  [dict removeObjectForKey:14];
   XCTAssertEqual(dict.count, 2U);
-  XCTAssertEqualObjects([dict valueForKey:11], @"abc");
-  XCTAssertNil([dict valueForKey:12]);
-  XCTAssertEqualObjects([dict valueForKey:13], @"ghi");
-  XCTAssertNil([dict valueForKey:14]);
+  XCTAssertEqualObjects([dict objectForKey:11], @"abc");
+  XCTAssertNil([dict objectForKey:12]);
+  XCTAssertEqualObjects([dict objectForKey:13], @"ghi");
+  XCTAssertNil([dict objectForKey:14]);
 
   [dict removeAll];
   XCTAssertEqual(dict.count, 0U);
-  XCTAssertNil([dict valueForKey:11]);
-  XCTAssertNil([dict valueForKey:12]);
-  XCTAssertNil([dict valueForKey:13]);
-  XCTAssertNil([dict valueForKey:14]);
+  XCTAssertNil([dict objectForKey:11]);
+  XCTAssertNil([dict objectForKey:12]);
+  XCTAssertNil([dict objectForKey:13]);
+  XCTAssertNil([dict objectForKey:14]);
   [dict release];
 }
 
 - (void)testInplaceMutation {
   const int32_t kKeys[] = { 11, 12, 13, 14 };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBInt32ObjectDictionary *dict =
-      [[GPBInt32ObjectDictionary alloc] initWithValues:kValues
-                                        forKeys:kKeys
-                                          count:GPBARRAYSIZE(kValues)];
+      [[GPBInt32ObjectDictionary alloc] initWithObjects:kObjects
+                                         forKeys:kKeys
+                                           count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:11], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:12], @"def");
-  XCTAssertEqualObjects([dict valueForKey:13], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:14], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:11], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:12], @"def");
+  XCTAssertEqualObjects([dict objectForKey:13], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:14], @"jkl");
 
-  [dict setValue:@"jkl" forKey:11];
+  [dict setObject:@"jkl" forKey:11];
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:11], @"jkl");
-  XCTAssertEqualObjects([dict valueForKey:12], @"def");
-  XCTAssertEqualObjects([dict valueForKey:13], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:14], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:11], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:12], @"def");
+  XCTAssertEqualObjects([dict objectForKey:13], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:14], @"jkl");
 
-  [dict setValue:@"def" forKey:14];
+  [dict setObject:@"def" forKey:14];
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:11], @"jkl");
-  XCTAssertEqualObjects([dict valueForKey:12], @"def");
-  XCTAssertEqualObjects([dict valueForKey:13], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:14], @"def");
+  XCTAssertEqualObjects([dict objectForKey:11], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:12], @"def");
+  XCTAssertEqualObjects([dict objectForKey:13], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:14], @"def");
 
   const int32_t kKeys2[] = { 12, 13 };
-  const id kValues2[] = { @"ghi", @"abc" };
+  const id kObjects2[] = { @"ghi", @"abc" };
   GPBInt32ObjectDictionary *dict2 =
-      [[GPBInt32ObjectDictionary alloc] initWithValues:kValues2
-                                               forKeys:kKeys2
-                                                 count:GPBARRAYSIZE(kValues2)];
+      [[GPBInt32ObjectDictionary alloc] initWithObjects:kObjects2
+                                                forKeys:kKeys2
+                                                  count:GPBARRAYSIZE(kObjects2)];
   XCTAssertNotNil(dict2);
   [dict addEntriesFromDictionary:dict2];
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:11], @"jkl");
-  XCTAssertEqualObjects([dict valueForKey:12], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:13], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:14], @"def");
+  XCTAssertEqualObjects([dict objectForKey:11], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:12], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:13], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:14], @"def");
 
   [dict2 release];
   [dict release];
diff --git a/objectivec/Tests/GPBDictionaryTests+Int64.m b/objectivec/Tests/GPBDictionaryTests+Int64.m
index 4a94e033..27f77f28 100644
--- a/objectivec/Tests/GPBDictionaryTests+Int64.m
+++ b/objectivec/Tests/GPBDictionaryTests+Int64.m
@@ -211,10 +211,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -568,10 +568,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -925,10 +925,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1282,10 +1282,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1639,10 +1639,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1996,10 +1996,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -2353,10 +2353,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -2710,10 +2710,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3071,10 +3071,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3366,48 +3366,48 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   GPBInt64ObjectDictionary *dict = [[GPBInt64ObjectDictionary alloc] init];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 0U);
-  XCTAssertNil([dict valueForKey:21LL]);
-  [dict enumerateKeysAndValuesUsingBlock:^(int64_t aKey, id aValue, BOOL *stop) {
-    #pragma unused(aKey, aValue, stop)
+  XCTAssertNil([dict objectForKey:21LL]);
+  [dict enumerateKeysAndObjectsUsingBlock:^(int64_t aKey, id aObject, BOOL *stop) {
+    #pragma unused(aKey, aObject, stop)
     XCTFail(@"Shouldn't get here!");
   }];
   [dict release];
 }
 
 - (void)testOne {
-  GPBInt64ObjectDictionary *dict = [GPBInt64ObjectDictionary dictionaryWithValue:@"abc" forKey:21LL];
+  GPBInt64ObjectDictionary *dict = [GPBInt64ObjectDictionary dictionaryWithObject:@"abc" forKey:21LL];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 1U);
-  XCTAssertEqualObjects([dict valueForKey:21LL], @"abc");
-  XCTAssertNil([dict valueForKey:22LL]);
-  [dict enumerateKeysAndValuesUsingBlock:^(int64_t aKey, id aValue, BOOL *stop) {
+  XCTAssertEqualObjects([dict objectForKey:21LL], @"abc");
+  XCTAssertNil([dict objectForKey:22LL]);
+  [dict enumerateKeysAndObjectsUsingBlock:^(int64_t aKey, id aObject, BOOL *stop) {
     XCTAssertEqual(aKey, 21LL);
-    XCTAssertEqualObjects(aValue, @"abc");
+    XCTAssertEqualObjects(aObject, @"abc");
     XCTAssertNotEqual(stop, NULL);
   }];
 }
 
 - (void)testBasics {
   const int64_t kKeys[] = { 21LL, 22LL, 23LL };
-  const id kValues[] = { @"abc", @"def", @"ghi" };
+  const id kObjects[] = { @"abc", @"def", @"ghi" };
   GPBInt64ObjectDictionary *dict =
-      [[GPBInt64ObjectDictionary alloc] initWithValues:kValues
-                                               forKeys:kKeys
-                                                 count:GPBARRAYSIZE(kValues)];
+      [[GPBInt64ObjectDictionary alloc] initWithObjects:kObjects
+                                                forKeys:kKeys
+                                                  count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 3U);
-  XCTAssertEqualObjects([dict valueForKey:21LL], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:22LL], @"def");
-  XCTAssertEqualObjects([dict valueForKey:23LL], @"ghi");
-  XCTAssertNil([dict valueForKey:24LL]);
+  XCTAssertEqualObjects([dict objectForKey:21LL], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:22LL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:23LL], @"ghi");
+  XCTAssertNil([dict objectForKey:24LL]);
 
   __block NSUInteger idx = 0;
   int64_t *seenKeys = malloc(3 * sizeof(int64_t));
-  id *seenValues = malloc(3 * sizeof(id));
-  [dict enumerateKeysAndValuesUsingBlock:^(int64_t aKey, id aValue, BOOL *stop) {
+  id *seenObjects = malloc(3 * sizeof(id));
+  [dict enumerateKeysAndObjectsUsingBlock:^(int64_t aKey, id aObject, BOOL *stop) {
     XCTAssertLessThan(idx, 3U);
     seenKeys[idx] = aKey;
-    seenValues[idx] = aValue;
+    seenObjects[idx] = aObject;
     XCTAssertNotEqual(stop, NULL);
     ++idx;
   }];
@@ -3416,18 +3416,18 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
     for (int j = 0; (j < 3) && !foundKey; ++j) {
       if (kKeys[i] == seenKeys[j]) {
         foundKey = YES;
-        XCTAssertEqualObjects(kValues[i], seenValues[j], @"i = %d, j = %d", i, j);
+        XCTAssertEqualObjects(kObjects[i], seenObjects[j], @"i = %d, j = %d", i, j);
       }
     }
     XCTAssertTrue(foundKey, @"i = %d", i);
   }
   free(seenKeys);
-  free(seenValues);
+  free(seenObjects);
 
   // Stopping the enumeration.
   idx = 0;
-  [dict enumerateKeysAndValuesUsingBlock:^(int64_t aKey, id aValue, BOOL *stop) {
-    #pragma unused(aKey, aValue)
+  [dict enumerateKeysAndObjectsUsingBlock:^(int64_t aKey, id aObject, BOOL *stop) {
+    #pragma unused(aKey, aObject)
     if (idx == 1) *stop = YES;
     XCTAssertNotEqual(idx, 2U);
     ++idx;
@@ -3438,33 +3438,33 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
 - (void)testEquality {
   const int64_t kKeys1[] = { 21LL, 22LL, 23LL, 24LL };
   const int64_t kKeys2[] = { 22LL, 21LL, 24LL };
-  const id kValues1[] = { @"abc", @"def", @"ghi" };
-  const id kValues2[] = { @"abc", @"jkl", @"ghi" };
-  const id kValues3[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects1[] = { @"abc", @"def", @"ghi" };
+  const id kObjects2[] = { @"abc", @"jkl", @"ghi" };
+  const id kObjects3[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBInt64ObjectDictionary *dict1 =
-      [[GPBInt64ObjectDictionary alloc] initWithValues:kValues1
-                                               forKeys:kKeys1
-                                                 count:GPBARRAYSIZE(kValues1)];
+      [[GPBInt64ObjectDictionary alloc] initWithObjects:kObjects1
+                                                forKeys:kKeys1
+                                                  count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict1);
   GPBInt64ObjectDictionary *dict1prime =
-      [[GPBInt64ObjectDictionary alloc] initWithValues:kValues1
-                                               forKeys:kKeys1
-                                                 count:GPBARRAYSIZE(kValues1)];
+      [[GPBInt64ObjectDictionary alloc] initWithObjects:kObjects1
+                                                forKeys:kKeys1
+                                                  count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict1prime);
   GPBInt64ObjectDictionary *dict2 =
-      [[GPBInt64ObjectDictionary alloc] initWithValues:kValues2
-                                               forKeys:kKeys1
-                                                 count:GPBARRAYSIZE(kValues2)];
+      [[GPBInt64ObjectDictionary alloc] initWithObjects:kObjects2
+                                                forKeys:kKeys1
+                                                  count:GPBARRAYSIZE(kObjects2)];
   XCTAssertNotNil(dict2);
   GPBInt64ObjectDictionary *dict3 =
-      [[GPBInt64ObjectDictionary alloc] initWithValues:kValues1
-                                               forKeys:kKeys2
-                                                 count:GPBARRAYSIZE(kValues1)];
+      [[GPBInt64ObjectDictionary alloc] initWithObjects:kObjects1
+                                                forKeys:kKeys2
+                                                  count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict3);
   GPBInt64ObjectDictionary *dict4 =
-      [[GPBInt64ObjectDictionary alloc] initWithValues:kValues3
-                                               forKeys:kKeys1
-                                                 count:GPBARRAYSIZE(kValues3)];
+      [[GPBInt64ObjectDictionary alloc] initWithObjects:kObjects3
+                                                forKeys:kKeys1
+                                                  count:GPBARRAYSIZE(kObjects3)];
   XCTAssertNotNil(dict4);
 
   // 1/1Prime should be different objects, but equal.
@@ -3473,10 +3473,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different objects; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same objects; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3491,11 +3491,11 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
 
 - (void)testCopy {
   const int64_t kKeys[] = { 21LL, 22LL, 23LL, 24LL };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBInt64ObjectDictionary *dict =
-      [[GPBInt64ObjectDictionary alloc] initWithValues:kValues
-                                               forKeys:kKeys
-                                                 count:GPBARRAYSIZE(kValues)];
+      [[GPBInt64ObjectDictionary alloc] initWithObjects:kObjects
+                                                forKeys:kKeys
+                                                  count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
 
   GPBInt64ObjectDictionary *dict2 = [dict copy];
@@ -3512,11 +3512,11 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
 
 - (void)testDictionaryFromDictionary {
   const int64_t kKeys[] = { 21LL, 22LL, 23LL, 24LL };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBInt64ObjectDictionary *dict =
-      [[GPBInt64ObjectDictionary alloc] initWithValues:kValues
-                                               forKeys:kKeys
-                                                 count:GPBARRAYSIZE(kValues)];
+      [[GPBInt64ObjectDictionary alloc] initWithObjects:kObjects
+                                                forKeys:kKeys
+                                                  count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
 
   GPBInt64ObjectDictionary *dict2 =
@@ -3534,108 +3534,108 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   XCTAssertNotNil(dict);
 
   XCTAssertEqual(dict.count, 0U);
-  [dict setValue:@"abc" forKey:21LL];
+  [dict setObject:@"abc" forKey:21LL];
   XCTAssertEqual(dict.count, 1U);
 
   const int64_t kKeys[] = { 22LL, 23LL, 24LL };
-  const id kValues[] = { @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"def", @"ghi", @"jkl" };
   GPBInt64ObjectDictionary *dict2 =
-      [[GPBInt64ObjectDictionary alloc] initWithValues:kValues
-                                               forKeys:kKeys
-                                                 count:GPBARRAYSIZE(kValues)];
+      [[GPBInt64ObjectDictionary alloc] initWithObjects:kObjects
+                                                forKeys:kKeys
+                                                  count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict2);
   [dict addEntriesFromDictionary:dict2];
   XCTAssertEqual(dict.count, 4U);
 
-  XCTAssertEqualObjects([dict valueForKey:21LL], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:22LL], @"def");
-  XCTAssertEqualObjects([dict valueForKey:23LL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:24LL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:21LL], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:22LL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:23LL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:24LL], @"jkl");
   [dict2 release];
 }
 
 - (void)testRemove {
   const int64_t kKeys[] = { 21LL, 22LL, 23LL, 24LL };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBInt64ObjectDictionary *dict =
-      [[GPBInt64ObjectDictionary alloc] initWithValues:kValues
-                                        forKeys:kKeys
-                                          count:GPBARRAYSIZE(kValues)];
+      [[GPBInt64ObjectDictionary alloc] initWithObjects:kObjects
+                                         forKeys:kKeys
+                                           count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 4U);
 
-  [dict removeValueForKey:22LL];
+  [dict removeObjectForKey:22LL];
   XCTAssertEqual(dict.count, 3U);
-  XCTAssertEqualObjects([dict valueForKey:21LL], @"abc");
-  XCTAssertNil([dict valueForKey:22LL]);
-  XCTAssertEqualObjects([dict valueForKey:23LL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:24LL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:21LL], @"abc");
+  XCTAssertNil([dict objectForKey:22LL]);
+  XCTAssertEqualObjects([dict objectForKey:23LL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:24LL], @"jkl");
 
   // Remove again does nothing.
-  [dict removeValueForKey:22LL];
+  [dict removeObjectForKey:22LL];
   XCTAssertEqual(dict.count, 3U);
-  XCTAssertEqualObjects([dict valueForKey:21LL], @"abc");
-  XCTAssertNil([dict valueForKey:22LL]);
-  XCTAssertEqualObjects([dict valueForKey:23LL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:24LL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:21LL], @"abc");
+  XCTAssertNil([dict objectForKey:22LL]);
+  XCTAssertEqualObjects([dict objectForKey:23LL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:24LL], @"jkl");
 
-  [dict removeValueForKey:24LL];
+  [dict removeObjectForKey:24LL];
   XCTAssertEqual(dict.count, 2U);
-  XCTAssertEqualObjects([dict valueForKey:21LL], @"abc");
-  XCTAssertNil([dict valueForKey:22LL]);
-  XCTAssertEqualObjects([dict valueForKey:23LL], @"ghi");
-  XCTAssertNil([dict valueForKey:24LL]);
+  XCTAssertEqualObjects([dict objectForKey:21LL], @"abc");
+  XCTAssertNil([dict objectForKey:22LL]);
+  XCTAssertEqualObjects([dict objectForKey:23LL], @"ghi");
+  XCTAssertNil([dict objectForKey:24LL]);
 
   [dict removeAll];
   XCTAssertEqual(dict.count, 0U);
-  XCTAssertNil([dict valueForKey:21LL]);
-  XCTAssertNil([dict valueForKey:22LL]);
-  XCTAssertNil([dict valueForKey:23LL]);
-  XCTAssertNil([dict valueForKey:24LL]);
+  XCTAssertNil([dict objectForKey:21LL]);
+  XCTAssertNil([dict objectForKey:22LL]);
+  XCTAssertNil([dict objectForKey:23LL]);
+  XCTAssertNil([dict objectForKey:24LL]);
   [dict release];
 }
 
 - (void)testInplaceMutation {
   const int64_t kKeys[] = { 21LL, 22LL, 23LL, 24LL };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBInt64ObjectDictionary *dict =
-      [[GPBInt64ObjectDictionary alloc] initWithValues:kValues
-                                        forKeys:kKeys
-                                          count:GPBARRAYSIZE(kValues)];
+      [[GPBInt64ObjectDictionary alloc] initWithObjects:kObjects
+                                         forKeys:kKeys
+                                           count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:21LL], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:22LL], @"def");
-  XCTAssertEqualObjects([dict valueForKey:23LL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:24LL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:21LL], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:22LL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:23LL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:24LL], @"jkl");
 
-  [dict setValue:@"jkl" forKey:21LL];
+  [dict setObject:@"jkl" forKey:21LL];
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:21LL], @"jkl");
-  XCTAssertEqualObjects([dict valueForKey:22LL], @"def");
-  XCTAssertEqualObjects([dict valueForKey:23LL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:24LL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:21LL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:22LL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:23LL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:24LL], @"jkl");
 
-  [dict setValue:@"def" forKey:24LL];
+  [dict setObject:@"def" forKey:24LL];
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:21LL], @"jkl");
-  XCTAssertEqualObjects([dict valueForKey:22LL], @"def");
-  XCTAssertEqualObjects([dict valueForKey:23LL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:24LL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:21LL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:22LL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:23LL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:24LL], @"def");
 
   const int64_t kKeys2[] = { 22LL, 23LL };
-  const id kValues2[] = { @"ghi", @"abc" };
+  const id kObjects2[] = { @"ghi", @"abc" };
   GPBInt64ObjectDictionary *dict2 =
-      [[GPBInt64ObjectDictionary alloc] initWithValues:kValues2
-                                               forKeys:kKeys2
-                                                 count:GPBARRAYSIZE(kValues2)];
+      [[GPBInt64ObjectDictionary alloc] initWithObjects:kObjects2
+                                                forKeys:kKeys2
+                                                  count:GPBARRAYSIZE(kObjects2)];
   XCTAssertNotNil(dict2);
   [dict addEntriesFromDictionary:dict2];
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:21LL], @"jkl");
-  XCTAssertEqualObjects([dict valueForKey:22LL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:23LL], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:24LL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:21LL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:22LL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:23LL], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:24LL], @"def");
 
   [dict2 release];
   [dict release];
diff --git a/objectivec/Tests/GPBDictionaryTests+String.m b/objectivec/Tests/GPBDictionaryTests+String.m
index 09fbc608..bfa10b19 100644
--- a/objectivec/Tests/GPBDictionaryTests+String.m
+++ b/objectivec/Tests/GPBDictionaryTests+String.m
@@ -211,10 +211,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -568,10 +568,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -925,10 +925,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1282,10 +1282,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1639,10 +1639,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1996,10 +1996,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -2353,10 +2353,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -2710,10 +2710,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3071,10 +3071,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
diff --git a/objectivec/Tests/GPBDictionaryTests+UInt32.m b/objectivec/Tests/GPBDictionaryTests+UInt32.m
index f8d280fa..c7c57652 100644
--- a/objectivec/Tests/GPBDictionaryTests+UInt32.m
+++ b/objectivec/Tests/GPBDictionaryTests+UInt32.m
@@ -211,10 +211,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -568,10 +568,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -925,10 +925,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1282,10 +1282,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1639,10 +1639,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1996,10 +1996,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -2353,10 +2353,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -2710,10 +2710,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3071,10 +3071,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3366,48 +3366,48 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   GPBUInt32ObjectDictionary *dict = [[GPBUInt32ObjectDictionary alloc] init];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 0U);
-  XCTAssertNil([dict valueForKey:1U]);
-  [dict enumerateKeysAndValuesUsingBlock:^(uint32_t aKey, id aValue, BOOL *stop) {
-    #pragma unused(aKey, aValue, stop)
+  XCTAssertNil([dict objectForKey:1U]);
+  [dict enumerateKeysAndObjectsUsingBlock:^(uint32_t aKey, id aObject, BOOL *stop) {
+    #pragma unused(aKey, aObject, stop)
     XCTFail(@"Shouldn't get here!");
   }];
   [dict release];
 }
 
 - (void)testOne {
-  GPBUInt32ObjectDictionary *dict = [GPBUInt32ObjectDictionary dictionaryWithValue:@"abc" forKey:1U];
+  GPBUInt32ObjectDictionary *dict = [GPBUInt32ObjectDictionary dictionaryWithObject:@"abc" forKey:1U];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 1U);
-  XCTAssertEqualObjects([dict valueForKey:1U], @"abc");
-  XCTAssertNil([dict valueForKey:2U]);
-  [dict enumerateKeysAndValuesUsingBlock:^(uint32_t aKey, id aValue, BOOL *stop) {
+  XCTAssertEqualObjects([dict objectForKey:1U], @"abc");
+  XCTAssertNil([dict objectForKey:2U]);
+  [dict enumerateKeysAndObjectsUsingBlock:^(uint32_t aKey, id aObject, BOOL *stop) {
     XCTAssertEqual(aKey, 1U);
-    XCTAssertEqualObjects(aValue, @"abc");
+    XCTAssertEqualObjects(aObject, @"abc");
     XCTAssertNotEqual(stop, NULL);
   }];
 }
 
 - (void)testBasics {
   const uint32_t kKeys[] = { 1U, 2U, 3U };
-  const id kValues[] = { @"abc", @"def", @"ghi" };
+  const id kObjects[] = { @"abc", @"def", @"ghi" };
   GPBUInt32ObjectDictionary *dict =
-      [[GPBUInt32ObjectDictionary alloc] initWithValues:kValues
-                                                forKeys:kKeys
-                                                  count:GPBARRAYSIZE(kValues)];
+      [[GPBUInt32ObjectDictionary alloc] initWithObjects:kObjects
+                                                 forKeys:kKeys
+                                                   count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 3U);
-  XCTAssertEqualObjects([dict valueForKey:1U], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:2U], @"def");
-  XCTAssertEqualObjects([dict valueForKey:3U], @"ghi");
-  XCTAssertNil([dict valueForKey:4U]);
+  XCTAssertEqualObjects([dict objectForKey:1U], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:2U], @"def");
+  XCTAssertEqualObjects([dict objectForKey:3U], @"ghi");
+  XCTAssertNil([dict objectForKey:4U]);
 
   __block NSUInteger idx = 0;
   uint32_t *seenKeys = malloc(3 * sizeof(uint32_t));
-  id *seenValues = malloc(3 * sizeof(id));
-  [dict enumerateKeysAndValuesUsingBlock:^(uint32_t aKey, id aValue, BOOL *stop) {
+  id *seenObjects = malloc(3 * sizeof(id));
+  [dict enumerateKeysAndObjectsUsingBlock:^(uint32_t aKey, id aObject, BOOL *stop) {
     XCTAssertLessThan(idx, 3U);
     seenKeys[idx] = aKey;
-    seenValues[idx] = aValue;
+    seenObjects[idx] = aObject;
     XCTAssertNotEqual(stop, NULL);
     ++idx;
   }];
@@ -3416,18 +3416,18 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
     for (int j = 0; (j < 3) && !foundKey; ++j) {
       if (kKeys[i] == seenKeys[j]) {
         foundKey = YES;
-        XCTAssertEqualObjects(kValues[i], seenValues[j], @"i = %d, j = %d", i, j);
+        XCTAssertEqualObjects(kObjects[i], seenObjects[j], @"i = %d, j = %d", i, j);
       }
     }
     XCTAssertTrue(foundKey, @"i = %d", i);
   }
   free(seenKeys);
-  free(seenValues);
+  free(seenObjects);
 
   // Stopping the enumeration.
   idx = 0;
-  [dict enumerateKeysAndValuesUsingBlock:^(uint32_t aKey, id aValue, BOOL *stop) {
-    #pragma unused(aKey, aValue)
+  [dict enumerateKeysAndObjectsUsingBlock:^(uint32_t aKey, id aObject, BOOL *stop) {
+    #pragma unused(aKey, aObject)
     if (idx == 1) *stop = YES;
     XCTAssertNotEqual(idx, 2U);
     ++idx;
@@ -3438,33 +3438,33 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
 - (void)testEquality {
   const uint32_t kKeys1[] = { 1U, 2U, 3U, 4U };
   const uint32_t kKeys2[] = { 2U, 1U, 4U };
-  const id kValues1[] = { @"abc", @"def", @"ghi" };
-  const id kValues2[] = { @"abc", @"jkl", @"ghi" };
-  const id kValues3[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects1[] = { @"abc", @"def", @"ghi" };
+  const id kObjects2[] = { @"abc", @"jkl", @"ghi" };
+  const id kObjects3[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBUInt32ObjectDictionary *dict1 =
-      [[GPBUInt32ObjectDictionary alloc] initWithValues:kValues1
-                                                forKeys:kKeys1
-                                                  count:GPBARRAYSIZE(kValues1)];
+      [[GPBUInt32ObjectDictionary alloc] initWithObjects:kObjects1
+                                                 forKeys:kKeys1
+                                                   count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict1);
   GPBUInt32ObjectDictionary *dict1prime =
-      [[GPBUInt32ObjectDictionary alloc] initWithValues:kValues1
-                                                forKeys:kKeys1
-                                                  count:GPBARRAYSIZE(kValues1)];
+      [[GPBUInt32ObjectDictionary alloc] initWithObjects:kObjects1
+                                                 forKeys:kKeys1
+                                                   count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict1prime);
   GPBUInt32ObjectDictionary *dict2 =
-      [[GPBUInt32ObjectDictionary alloc] initWithValues:kValues2
-                                                forKeys:kKeys1
-                                                  count:GPBARRAYSIZE(kValues2)];
+      [[GPBUInt32ObjectDictionary alloc] initWithObjects:kObjects2
+                                                 forKeys:kKeys1
+                                                   count:GPBARRAYSIZE(kObjects2)];
   XCTAssertNotNil(dict2);
   GPBUInt32ObjectDictionary *dict3 =
-      [[GPBUInt32ObjectDictionary alloc] initWithValues:kValues1
-                                                forKeys:kKeys2
-                                                  count:GPBARRAYSIZE(kValues1)];
+      [[GPBUInt32ObjectDictionary alloc] initWithObjects:kObjects1
+                                                 forKeys:kKeys2
+                                                   count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict3);
   GPBUInt32ObjectDictionary *dict4 =
-      [[GPBUInt32ObjectDictionary alloc] initWithValues:kValues3
-                                                forKeys:kKeys1
-                                                  count:GPBARRAYSIZE(kValues3)];
+      [[GPBUInt32ObjectDictionary alloc] initWithObjects:kObjects3
+                                                 forKeys:kKeys1
+                                                   count:GPBARRAYSIZE(kObjects3)];
   XCTAssertNotNil(dict4);
 
   // 1/1Prime should be different objects, but equal.
@@ -3473,10 +3473,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different objects; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same objects; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3491,11 +3491,11 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
 
 - (void)testCopy {
   const uint32_t kKeys[] = { 1U, 2U, 3U, 4U };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBUInt32ObjectDictionary *dict =
-      [[GPBUInt32ObjectDictionary alloc] initWithValues:kValues
-                                                forKeys:kKeys
-                                                  count:GPBARRAYSIZE(kValues)];
+      [[GPBUInt32ObjectDictionary alloc] initWithObjects:kObjects
+                                                 forKeys:kKeys
+                                                   count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
 
   GPBUInt32ObjectDictionary *dict2 = [dict copy];
@@ -3512,11 +3512,11 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
 
 - (void)testDictionaryFromDictionary {
   const uint32_t kKeys[] = { 1U, 2U, 3U, 4U };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBUInt32ObjectDictionary *dict =
-      [[GPBUInt32ObjectDictionary alloc] initWithValues:kValues
-                                                forKeys:kKeys
-                                                  count:GPBARRAYSIZE(kValues)];
+      [[GPBUInt32ObjectDictionary alloc] initWithObjects:kObjects
+                                                 forKeys:kKeys
+                                                   count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
 
   GPBUInt32ObjectDictionary *dict2 =
@@ -3534,108 +3534,108 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   XCTAssertNotNil(dict);
 
   XCTAssertEqual(dict.count, 0U);
-  [dict setValue:@"abc" forKey:1U];
+  [dict setObject:@"abc" forKey:1U];
   XCTAssertEqual(dict.count, 1U);
 
   const uint32_t kKeys[] = { 2U, 3U, 4U };
-  const id kValues[] = { @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"def", @"ghi", @"jkl" };
   GPBUInt32ObjectDictionary *dict2 =
-      [[GPBUInt32ObjectDictionary alloc] initWithValues:kValues
-                                                forKeys:kKeys
-                                                  count:GPBARRAYSIZE(kValues)];
+      [[GPBUInt32ObjectDictionary alloc] initWithObjects:kObjects
+                                                 forKeys:kKeys
+                                                   count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict2);
   [dict addEntriesFromDictionary:dict2];
   XCTAssertEqual(dict.count, 4U);
 
-  XCTAssertEqualObjects([dict valueForKey:1U], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:2U], @"def");
-  XCTAssertEqualObjects([dict valueForKey:3U], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:4U], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:1U], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:2U], @"def");
+  XCTAssertEqualObjects([dict objectForKey:3U], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:4U], @"jkl");
   [dict2 release];
 }
 
 - (void)testRemove {
   const uint32_t kKeys[] = { 1U, 2U, 3U, 4U };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBUInt32ObjectDictionary *dict =
-      [[GPBUInt32ObjectDictionary alloc] initWithValues:kValues
-                                         forKeys:kKeys
-                                           count:GPBARRAYSIZE(kValues)];
+      [[GPBUInt32ObjectDictionary alloc] initWithObjects:kObjects
+                                          forKeys:kKeys
+                                            count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 4U);
 
-  [dict removeValueForKey:2U];
+  [dict removeObjectForKey:2U];
   XCTAssertEqual(dict.count, 3U);
-  XCTAssertEqualObjects([dict valueForKey:1U], @"abc");
-  XCTAssertNil([dict valueForKey:2U]);
-  XCTAssertEqualObjects([dict valueForKey:3U], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:4U], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:1U], @"abc");
+  XCTAssertNil([dict objectForKey:2U]);
+  XCTAssertEqualObjects([dict objectForKey:3U], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:4U], @"jkl");
 
   // Remove again does nothing.
-  [dict removeValueForKey:2U];
+  [dict removeObjectForKey:2U];
   XCTAssertEqual(dict.count, 3U);
-  XCTAssertEqualObjects([dict valueForKey:1U], @"abc");
-  XCTAssertNil([dict valueForKey:2U]);
-  XCTAssertEqualObjects([dict valueForKey:3U], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:4U], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:1U], @"abc");
+  XCTAssertNil([dict objectForKey:2U]);
+  XCTAssertEqualObjects([dict objectForKey:3U], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:4U], @"jkl");
 
-  [dict removeValueForKey:4U];
+  [dict removeObjectForKey:4U];
   XCTAssertEqual(dict.count, 2U);
-  XCTAssertEqualObjects([dict valueForKey:1U], @"abc");
-  XCTAssertNil([dict valueForKey:2U]);
-  XCTAssertEqualObjects([dict valueForKey:3U], @"ghi");
-  XCTAssertNil([dict valueForKey:4U]);
+  XCTAssertEqualObjects([dict objectForKey:1U], @"abc");
+  XCTAssertNil([dict objectForKey:2U]);
+  XCTAssertEqualObjects([dict objectForKey:3U], @"ghi");
+  XCTAssertNil([dict objectForKey:4U]);
 
   [dict removeAll];
   XCTAssertEqual(dict.count, 0U);
-  XCTAssertNil([dict valueForKey:1U]);
-  XCTAssertNil([dict valueForKey:2U]);
-  XCTAssertNil([dict valueForKey:3U]);
-  XCTAssertNil([dict valueForKey:4U]);
+  XCTAssertNil([dict objectForKey:1U]);
+  XCTAssertNil([dict objectForKey:2U]);
+  XCTAssertNil([dict objectForKey:3U]);
+  XCTAssertNil([dict objectForKey:4U]);
   [dict release];
 }
 
 - (void)testInplaceMutation {
   const uint32_t kKeys[] = { 1U, 2U, 3U, 4U };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBUInt32ObjectDictionary *dict =
-      [[GPBUInt32ObjectDictionary alloc] initWithValues:kValues
-                                         forKeys:kKeys
-                                           count:GPBARRAYSIZE(kValues)];
+      [[GPBUInt32ObjectDictionary alloc] initWithObjects:kObjects
+                                          forKeys:kKeys
+                                            count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:1U], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:2U], @"def");
-  XCTAssertEqualObjects([dict valueForKey:3U], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:4U], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:1U], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:2U], @"def");
+  XCTAssertEqualObjects([dict objectForKey:3U], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:4U], @"jkl");
 
-  [dict setValue:@"jkl" forKey:1U];
+  [dict setObject:@"jkl" forKey:1U];
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:1U], @"jkl");
-  XCTAssertEqualObjects([dict valueForKey:2U], @"def");
-  XCTAssertEqualObjects([dict valueForKey:3U], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:4U], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:1U], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:2U], @"def");
+  XCTAssertEqualObjects([dict objectForKey:3U], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:4U], @"jkl");
 
-  [dict setValue:@"def" forKey:4U];
+  [dict setObject:@"def" forKey:4U];
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:1U], @"jkl");
-  XCTAssertEqualObjects([dict valueForKey:2U], @"def");
-  XCTAssertEqualObjects([dict valueForKey:3U], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:4U], @"def");
+  XCTAssertEqualObjects([dict objectForKey:1U], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:2U], @"def");
+  XCTAssertEqualObjects([dict objectForKey:3U], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:4U], @"def");
 
   const uint32_t kKeys2[] = { 2U, 3U };
-  const id kValues2[] = { @"ghi", @"abc" };
+  const id kObjects2[] = { @"ghi", @"abc" };
   GPBUInt32ObjectDictionary *dict2 =
-      [[GPBUInt32ObjectDictionary alloc] initWithValues:kValues2
-                                                forKeys:kKeys2
-                                                  count:GPBARRAYSIZE(kValues2)];
+      [[GPBUInt32ObjectDictionary alloc] initWithObjects:kObjects2
+                                                 forKeys:kKeys2
+                                                   count:GPBARRAYSIZE(kObjects2)];
   XCTAssertNotNil(dict2);
   [dict addEntriesFromDictionary:dict2];
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:1U], @"jkl");
-  XCTAssertEqualObjects([dict valueForKey:2U], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:3U], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:4U], @"def");
+  XCTAssertEqualObjects([dict objectForKey:1U], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:2U], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:3U], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:4U], @"def");
 
   [dict2 release];
   [dict release];
diff --git a/objectivec/Tests/GPBDictionaryTests+UInt64.m b/objectivec/Tests/GPBDictionaryTests+UInt64.m
index cebd6df2..b64d3a96 100644
--- a/objectivec/Tests/GPBDictionaryTests+UInt64.m
+++ b/objectivec/Tests/GPBDictionaryTests+UInt64.m
@@ -211,10 +211,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -568,10 +568,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -925,10 +925,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1282,10 +1282,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1639,10 +1639,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -1996,10 +1996,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -2353,10 +2353,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -2710,10 +2710,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3071,10 +3071,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different values; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same values; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3366,48 +3366,48 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   GPBUInt64ObjectDictionary *dict = [[GPBUInt64ObjectDictionary alloc] init];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 0U);
-  XCTAssertNil([dict valueForKey:31ULL]);
-  [dict enumerateKeysAndValuesUsingBlock:^(uint64_t aKey, id aValue, BOOL *stop) {
-    #pragma unused(aKey, aValue, stop)
+  XCTAssertNil([dict objectForKey:31ULL]);
+  [dict enumerateKeysAndObjectsUsingBlock:^(uint64_t aKey, id aObject, BOOL *stop) {
+    #pragma unused(aKey, aObject, stop)
     XCTFail(@"Shouldn't get here!");
   }];
   [dict release];
 }
 
 - (void)testOne {
-  GPBUInt64ObjectDictionary *dict = [GPBUInt64ObjectDictionary dictionaryWithValue:@"abc" forKey:31ULL];
+  GPBUInt64ObjectDictionary *dict = [GPBUInt64ObjectDictionary dictionaryWithObject:@"abc" forKey:31ULL];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 1U);
-  XCTAssertEqualObjects([dict valueForKey:31ULL], @"abc");
-  XCTAssertNil([dict valueForKey:32ULL]);
-  [dict enumerateKeysAndValuesUsingBlock:^(uint64_t aKey, id aValue, BOOL *stop) {
+  XCTAssertEqualObjects([dict objectForKey:31ULL], @"abc");
+  XCTAssertNil([dict objectForKey:32ULL]);
+  [dict enumerateKeysAndObjectsUsingBlock:^(uint64_t aKey, id aObject, BOOL *stop) {
     XCTAssertEqual(aKey, 31ULL);
-    XCTAssertEqualObjects(aValue, @"abc");
+    XCTAssertEqualObjects(aObject, @"abc");
     XCTAssertNotEqual(stop, NULL);
   }];
 }
 
 - (void)testBasics {
   const uint64_t kKeys[] = { 31ULL, 32ULL, 33ULL };
-  const id kValues[] = { @"abc", @"def", @"ghi" };
+  const id kObjects[] = { @"abc", @"def", @"ghi" };
   GPBUInt64ObjectDictionary *dict =
-      [[GPBUInt64ObjectDictionary alloc] initWithValues:kValues
-                                                forKeys:kKeys
-                                                  count:GPBARRAYSIZE(kValues)];
+      [[GPBUInt64ObjectDictionary alloc] initWithObjects:kObjects
+                                                 forKeys:kKeys
+                                                   count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 3U);
-  XCTAssertEqualObjects([dict valueForKey:31ULL], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:32ULL], @"def");
-  XCTAssertEqualObjects([dict valueForKey:33ULL], @"ghi");
-  XCTAssertNil([dict valueForKey:34ULL]);
+  XCTAssertEqualObjects([dict objectForKey:31ULL], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:32ULL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:33ULL], @"ghi");
+  XCTAssertNil([dict objectForKey:34ULL]);
 
   __block NSUInteger idx = 0;
   uint64_t *seenKeys = malloc(3 * sizeof(uint64_t));
-  id *seenValues = malloc(3 * sizeof(id));
-  [dict enumerateKeysAndValuesUsingBlock:^(uint64_t aKey, id aValue, BOOL *stop) {
+  id *seenObjects = malloc(3 * sizeof(id));
+  [dict enumerateKeysAndObjectsUsingBlock:^(uint64_t aKey, id aObject, BOOL *stop) {
     XCTAssertLessThan(idx, 3U);
     seenKeys[idx] = aKey;
-    seenValues[idx] = aValue;
+    seenObjects[idx] = aObject;
     XCTAssertNotEqual(stop, NULL);
     ++idx;
   }];
@@ -3416,18 +3416,18 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
     for (int j = 0; (j < 3) && !foundKey; ++j) {
       if (kKeys[i] == seenKeys[j]) {
         foundKey = YES;
-        XCTAssertEqualObjects(kValues[i], seenValues[j], @"i = %d, j = %d", i, j);
+        XCTAssertEqualObjects(kObjects[i], seenObjects[j], @"i = %d, j = %d", i, j);
       }
     }
     XCTAssertTrue(foundKey, @"i = %d", i);
   }
   free(seenKeys);
-  free(seenValues);
+  free(seenObjects);
 
   // Stopping the enumeration.
   idx = 0;
-  [dict enumerateKeysAndValuesUsingBlock:^(uint64_t aKey, id aValue, BOOL *stop) {
-    #pragma unused(aKey, aValue)
+  [dict enumerateKeysAndObjectsUsingBlock:^(uint64_t aKey, id aObject, BOOL *stop) {
+    #pragma unused(aKey, aObject)
     if (idx == 1) *stop = YES;
     XCTAssertNotEqual(idx, 2U);
     ++idx;
@@ -3438,33 +3438,33 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
 - (void)testEquality {
   const uint64_t kKeys1[] = { 31ULL, 32ULL, 33ULL, 34ULL };
   const uint64_t kKeys2[] = { 32ULL, 31ULL, 34ULL };
-  const id kValues1[] = { @"abc", @"def", @"ghi" };
-  const id kValues2[] = { @"abc", @"jkl", @"ghi" };
-  const id kValues3[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects1[] = { @"abc", @"def", @"ghi" };
+  const id kObjects2[] = { @"abc", @"jkl", @"ghi" };
+  const id kObjects3[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBUInt64ObjectDictionary *dict1 =
-      [[GPBUInt64ObjectDictionary alloc] initWithValues:kValues1
-                                                forKeys:kKeys1
-                                                  count:GPBARRAYSIZE(kValues1)];
+      [[GPBUInt64ObjectDictionary alloc] initWithObjects:kObjects1
+                                                 forKeys:kKeys1
+                                                   count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict1);
   GPBUInt64ObjectDictionary *dict1prime =
-      [[GPBUInt64ObjectDictionary alloc] initWithValues:kValues1
-                                                forKeys:kKeys1
-                                                  count:GPBARRAYSIZE(kValues1)];
+      [[GPBUInt64ObjectDictionary alloc] initWithObjects:kObjects1
+                                                 forKeys:kKeys1
+                                                   count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict1prime);
   GPBUInt64ObjectDictionary *dict2 =
-      [[GPBUInt64ObjectDictionary alloc] initWithValues:kValues2
-                                                forKeys:kKeys1
-                                                  count:GPBARRAYSIZE(kValues2)];
+      [[GPBUInt64ObjectDictionary alloc] initWithObjects:kObjects2
+                                                 forKeys:kKeys1
+                                                   count:GPBARRAYSIZE(kObjects2)];
   XCTAssertNotNil(dict2);
   GPBUInt64ObjectDictionary *dict3 =
-      [[GPBUInt64ObjectDictionary alloc] initWithValues:kValues1
-                                                forKeys:kKeys2
-                                                  count:GPBARRAYSIZE(kValues1)];
+      [[GPBUInt64ObjectDictionary alloc] initWithObjects:kObjects1
+                                                 forKeys:kKeys2
+                                                   count:GPBARRAYSIZE(kObjects1)];
   XCTAssertNotNil(dict3);
   GPBUInt64ObjectDictionary *dict4 =
-      [[GPBUInt64ObjectDictionary alloc] initWithValues:kValues3
-                                                forKeys:kKeys1
-                                                  count:GPBARRAYSIZE(kValues3)];
+      [[GPBUInt64ObjectDictionary alloc] initWithObjects:kObjects3
+                                                 forKeys:kKeys1
+                                                   count:GPBARRAYSIZE(kObjects3)];
   XCTAssertNotNil(dict4);
 
   // 1/1Prime should be different objects, but equal.
@@ -3473,10 +3473,10 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   // Equal, so they must have same hash.
   XCTAssertEqual([dict1 hash], [dict1prime hash]);
 
-  // 2 is save keys, different values; not equal.
+  // 2 is same keys, different objects; not equal.
   XCTAssertNotEqualObjects(dict1, dict2);
 
-  // 3 is different keys, samae values; not equal.
+  // 3 is different keys, same objects; not equal.
   XCTAssertNotEqualObjects(dict1, dict3);
 
   // 4 extra pair; not equal
@@ -3491,11 +3491,11 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
 
 - (void)testCopy {
   const uint64_t kKeys[] = { 31ULL, 32ULL, 33ULL, 34ULL };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBUInt64ObjectDictionary *dict =
-      [[GPBUInt64ObjectDictionary alloc] initWithValues:kValues
-                                                forKeys:kKeys
-                                                  count:GPBARRAYSIZE(kValues)];
+      [[GPBUInt64ObjectDictionary alloc] initWithObjects:kObjects
+                                                 forKeys:kKeys
+                                                   count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
 
   GPBUInt64ObjectDictionary *dict2 = [dict copy];
@@ -3512,11 +3512,11 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
 
 - (void)testDictionaryFromDictionary {
   const uint64_t kKeys[] = { 31ULL, 32ULL, 33ULL, 34ULL };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBUInt64ObjectDictionary *dict =
-      [[GPBUInt64ObjectDictionary alloc] initWithValues:kValues
-                                                forKeys:kKeys
-                                                  count:GPBARRAYSIZE(kValues)];
+      [[GPBUInt64ObjectDictionary alloc] initWithObjects:kObjects
+                                                 forKeys:kKeys
+                                                   count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
 
   GPBUInt64ObjectDictionary *dict2 =
@@ -3534,108 +3534,108 @@ static BOOL TestingEnum_IsValidValue(int32_t value) {
   XCTAssertNotNil(dict);
 
   XCTAssertEqual(dict.count, 0U);
-  [dict setValue:@"abc" forKey:31ULL];
+  [dict setObject:@"abc" forKey:31ULL];
   XCTAssertEqual(dict.count, 1U);
 
   const uint64_t kKeys[] = { 32ULL, 33ULL, 34ULL };
-  const id kValues[] = { @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"def", @"ghi", @"jkl" };
   GPBUInt64ObjectDictionary *dict2 =
-      [[GPBUInt64ObjectDictionary alloc] initWithValues:kValues
-                                                forKeys:kKeys
-                                                  count:GPBARRAYSIZE(kValues)];
+      [[GPBUInt64ObjectDictionary alloc] initWithObjects:kObjects
+                                                 forKeys:kKeys
+                                                   count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict2);
   [dict addEntriesFromDictionary:dict2];
   XCTAssertEqual(dict.count, 4U);
 
-  XCTAssertEqualObjects([dict valueForKey:31ULL], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:32ULL], @"def");
-  XCTAssertEqualObjects([dict valueForKey:33ULL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:34ULL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:31ULL], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:32ULL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:33ULL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:34ULL], @"jkl");
   [dict2 release];
 }
 
 - (void)testRemove {
   const uint64_t kKeys[] = { 31ULL, 32ULL, 33ULL, 34ULL };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBUInt64ObjectDictionary *dict =
-      [[GPBUInt64ObjectDictionary alloc] initWithValues:kValues
-                                         forKeys:kKeys
-                                           count:GPBARRAYSIZE(kValues)];
+      [[GPBUInt64ObjectDictionary alloc] initWithObjects:kObjects
+                                          forKeys:kKeys
+                                            count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 4U);
 
-  [dict removeValueForKey:32ULL];
+  [dict removeObjectForKey:32ULL];
   XCTAssertEqual(dict.count, 3U);
-  XCTAssertEqualObjects([dict valueForKey:31ULL], @"abc");
-  XCTAssertNil([dict valueForKey:32ULL]);
-  XCTAssertEqualObjects([dict valueForKey:33ULL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:34ULL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:31ULL], @"abc");
+  XCTAssertNil([dict objectForKey:32ULL]);
+  XCTAssertEqualObjects([dict objectForKey:33ULL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:34ULL], @"jkl");
 
   // Remove again does nothing.
-  [dict removeValueForKey:32ULL];
+  [dict removeObjectForKey:32ULL];
   XCTAssertEqual(dict.count, 3U);
-  XCTAssertEqualObjects([dict valueForKey:31ULL], @"abc");
-  XCTAssertNil([dict valueForKey:32ULL]);
-  XCTAssertEqualObjects([dict valueForKey:33ULL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:34ULL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:31ULL], @"abc");
+  XCTAssertNil([dict objectForKey:32ULL]);
+  XCTAssertEqualObjects([dict objectForKey:33ULL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:34ULL], @"jkl");
 
-  [dict removeValueForKey:34ULL];
+  [dict removeObjectForKey:34ULL];
   XCTAssertEqual(dict.count, 2U);
-  XCTAssertEqualObjects([dict valueForKey:31ULL], @"abc");
-  XCTAssertNil([dict valueForKey:32ULL]);
-  XCTAssertEqualObjects([dict valueForKey:33ULL], @"ghi");
-  XCTAssertNil([dict valueForKey:34ULL]);
+  XCTAssertEqualObjects([dict objectForKey:31ULL], @"abc");
+  XCTAssertNil([dict objectForKey:32ULL]);
+  XCTAssertEqualObjects([dict objectForKey:33ULL], @"ghi");
+  XCTAssertNil([dict objectForKey:34ULL]);
 
   [dict removeAll];
   XCTAssertEqual(dict.count, 0U);
-  XCTAssertNil([dict valueForKey:31ULL]);
-  XCTAssertNil([dict valueForKey:32ULL]);
-  XCTAssertNil([dict valueForKey:33ULL]);
-  XCTAssertNil([dict valueForKey:34ULL]);
+  XCTAssertNil([dict objectForKey:31ULL]);
+  XCTAssertNil([dict objectForKey:32ULL]);
+  XCTAssertNil([dict objectForKey:33ULL]);
+  XCTAssertNil([dict objectForKey:34ULL]);
   [dict release];
 }
 
 - (void)testInplaceMutation {
   const uint64_t kKeys[] = { 31ULL, 32ULL, 33ULL, 34ULL };
-  const id kValues[] = { @"abc", @"def", @"ghi", @"jkl" };
+  const id kObjects[] = { @"abc", @"def", @"ghi", @"jkl" };
   GPBUInt64ObjectDictionary *dict =
-      [[GPBUInt64ObjectDictionary alloc] initWithValues:kValues
-                                         forKeys:kKeys
-                                           count:GPBARRAYSIZE(kValues)];
+      [[GPBUInt64ObjectDictionary alloc] initWithObjects:kObjects
+                                          forKeys:kKeys
+                                            count:GPBARRAYSIZE(kObjects)];
   XCTAssertNotNil(dict);
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:31ULL], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:32ULL], @"def");
-  XCTAssertEqualObjects([dict valueForKey:33ULL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:34ULL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:31ULL], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:32ULL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:33ULL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:34ULL], @"jkl");
 
-  [dict setValue:@"jkl" forKey:31ULL];
+  [dict setObject:@"jkl" forKey:31ULL];
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:31ULL], @"jkl");
-  XCTAssertEqualObjects([dict valueForKey:32ULL], @"def");
-  XCTAssertEqualObjects([dict valueForKey:33ULL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:34ULL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:31ULL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:32ULL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:33ULL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:34ULL], @"jkl");
 
-  [dict setValue:@"def" forKey:34ULL];
+  [dict setObject:@"def" forKey:34ULL];
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:31ULL], @"jkl");
-  XCTAssertEqualObjects([dict valueForKey:32ULL], @"def");
-  XCTAssertEqualObjects([dict valueForKey:33ULL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:34ULL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:31ULL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:32ULL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:33ULL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:34ULL], @"def");
 
   const uint64_t kKeys2[] = { 32ULL, 33ULL };
-  const id kValues2[] = { @"ghi", @"abc" };
+  const id kObjects2[] = { @"ghi", @"abc" };
   GPBUInt64ObjectDictionary *dict2 =
-      [[GPBUInt64ObjectDictionary alloc] initWithValues:kValues2
-                                                forKeys:kKeys2
-                                                  count:GPBARRAYSIZE(kValues2)];
+      [[GPBUInt64ObjectDictionary alloc] initWithObjects:kObjects2
+                                                 forKeys:kKeys2
+                                                   count:GPBARRAYSIZE(kObjects2)];
   XCTAssertNotNil(dict2);
   [dict addEntriesFromDictionary:dict2];
   XCTAssertEqual(dict.count, 4U);
-  XCTAssertEqualObjects([dict valueForKey:31ULL], @"jkl");
-  XCTAssertEqualObjects([dict valueForKey:32ULL], @"ghi");
-  XCTAssertEqualObjects([dict valueForKey:33ULL], @"abc");
-  XCTAssertEqualObjects([dict valueForKey:34ULL], @"def");
+  XCTAssertEqualObjects([dict objectForKey:31ULL], @"jkl");
+  XCTAssertEqualObjects([dict objectForKey:32ULL], @"ghi");
+  XCTAssertEqualObjects([dict objectForKey:33ULL], @"abc");
+  XCTAssertEqualObjects([dict objectForKey:34ULL], @"def");
 
   [dict2 release];
   [dict release];
diff --git a/objectivec/Tests/GPBDictionaryTests.pddm b/objectivec/Tests/GPBDictionaryTests.pddm
index ee26fac8..ada93c64 100644
--- a/objectivec/Tests/GPBDictionaryTests.pddm
+++ b/objectivec/Tests/GPBDictionaryTests.pddm
@@ -45,12 +45,12 @@
 //%TESTS_FOR_ENUM_VALUE_RAW_ADDITIONS(KEY_NAME, KEY_TYPE, KisP, KSUFFIX, KEY1, KEY2, KEY3, KEY4)
 
 //%PDDM-DEFINE TESTS_FOR_POD_VALUE(KEY_NAME, KEY_TYPE, KisP, KSUFFIX, KEY1, KEY2, KEY3, KEY4, VALUE_NAME, VALUE_TYPE, VACCESSOR, VAL1, VAL2, VAL3, VAL4)
-//%TESTS_COMMON(KEY_NAME, KEY_TYPE, KisP, KSUFFIX, KEY1, KEY2, KEY3, KEY4, VALUE_NAME, VALUE_TYPE, , POD, VACCESSOR, VAL1, VAL2, VAL3, VAL4)
+//%TESTS_COMMON(KEY_NAME, KEY_TYPE, KisP, KSUFFIX, KEY1, KEY2, KEY3, KEY4, VALUE_NAME, VALUE_TYPE, , value, POD, VACCESSOR, VAL1, VAL2, VAL3, VAL4)
 
 //%PDDM-DEFINE TESTS_FOR_POD_KEY_OBJECT_VALUE(KEY_NAME, KEY_TYPE, KEY1, KEY2, KEY3, KEY4, VALUE_NAME, VALUE_TYPE, VAL1, VAL2, VAL3, VAL4)
-//%TESTS_COMMON(KEY_NAME, KEY_TYPE, , , KEY1, KEY2, KEY3, KEY4, VALUE_NAME, VALUE_TYPE, Objects, OBJECT, , VAL1, VAL2, VAL3, VAL4)
+//%TESTS_COMMON(KEY_NAME, KEY_TYPE, , , KEY1, KEY2, KEY3, KEY4, VALUE_NAME, VALUE_TYPE, Objects, object, OBJECT, , VAL1, VAL2, VAL3, VAL4)
 
-//%PDDM-DEFINE TESTS_COMMON(KEY_NAME, KEY_TYPE, KisP, KSUFFIX, KEY1, KEY2, KEY3, KEY4, VALUE_NAME, VALUE_TYPE, VSUFFIX, VHELPER, VACCESSOR, VAL1, VAL2, VAL3, VAL4)
+//%PDDM-DEFINE TESTS_COMMON(KEY_NAME, KEY_TYPE, KisP, KSUFFIX, KEY1, KEY2, KEY3, KEY4, VALUE_NAME, VALUE_TYPE, VSUFFIX, VNAME, VHELPER, VACCESSOR, VAL1, VAL2, VAL3, VAL4)
 //%#pragma mark - KEY_NAME -> VALUE_NAME
 //%
 //%@interface GPB##KEY_NAME##VALUE_NAME##DictionaryTests : XCTestCase
@@ -63,47 +63,47 @@
 //%  XCTAssertNotNil(dict);
 //%  XCTAssertEqual(dict.count, 0U);
 //%VALUE_NOT_FOUND##VHELPER(dict, KEY1)
-//%  [dict enumerateKeysAndValuesUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE aValue, BOOL *stop) {
-//%    #pragma unused(aKey, aValue, stop)
+//%  [dict enumerateKeysAnd##VNAME$u##sUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE a##VNAME$u, BOOL *stop) {
+//%    #pragma unused(aKey, a##VNAME$u, stop)
 //%    XCTFail(@"Shouldn't get here!");
 //%  }];
 //%  [dict release];
 //%}
 //%
 //%- (void)testOne {
-//%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict = [GPB##KEY_NAME##VALUE_NAME##Dictionary dictionaryWithValue:VAL1 forKey:KEY1];
+//%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict = [GPB##KEY_NAME##VALUE_NAME##Dictionary dictionaryWith##VNAME$u##:VAL1 forKey:KEY1];
 //%  XCTAssertNotNil(dict);
 //%  XCTAssertEqual(dict.count, 1U);
-//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, value)TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
+//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, VNAME)TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
 //%VALUE_NOT_FOUND##VHELPER(dict, KEY2)
-//%  [dict enumerateKeysAndValuesUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE aValue, BOOL *stop) {
+//%  [dict enumerateKeysAnd##VNAME$u##sUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE a##VNAME$u, BOOL *stop) {
 //%    XCTAssertEqual##KSUFFIX(aKey, KEY1);
-//%    XCTAssertEqual##VSUFFIX(aValue, VAL1);
+//%    XCTAssertEqual##VSUFFIX(a##VNAME$u, VAL1);
 //%    XCTAssertNotEqual(stop, NULL);
 //%  }];
 //%}
 //%
 //%- (void)testBasics {
 //%  const KEY_TYPE KisP##kKeys[] = { KEY1, KEY2, KEY3 };
-//%  const VALUE_TYPE kValues[] = { VAL1, VAL2, VAL3 };
+//%  const VALUE_TYPE k##VNAME$u##s[] = { VAL1, VAL2, VAL3 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s)];
 //%  XCTAssertNotNil(dict);
 //%  XCTAssertEqual(dict.count, 3U);
-//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, value)TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
-//%TEST_VALUE##VHELPER(dict, value, KEY2, VAL2)
-//%TEST_VALUE##VHELPER(dict, value, KEY3, VAL3)
+//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, VNAME)TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY2, VAL2)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY3, VAL3)
 //%VALUE_NOT_FOUND##VHELPER(dict, KEY4)
 //%
 //%  __block NSUInteger idx = 0;
 //%  KEY_TYPE KisP##*seenKeys = malloc(3 * sizeof(KEY_TYPE##KisP));
-//%  VALUE_TYPE *seenValues = malloc(3 * sizeof(VALUE_TYPE));
-//%  [dict enumerateKeysAndValuesUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE aValue, BOOL *stop) {
+//%  VALUE_TYPE *seen##VNAME$u##s = malloc(3 * sizeof(VALUE_TYPE));
+//%  [dict enumerateKeysAnd##VNAME$u##sUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE a##VNAME$u, BOOL *stop) {
 //%    XCTAssertLessThan(idx, 3U);
 //%    seenKeys[idx] = aKey;
-//%    seenValues[idx] = aValue;
+//%    seen##VNAME$u##s[idx] = a##VNAME$u##;
 //%    XCTAssertNotEqual(stop, NULL);
 //%    ++idx;
 //%  }];
@@ -112,18 +112,18 @@
 //%    for (int j = 0; (j < 3) && !foundKey; ++j) {
 //%      if (COMPARE_KEYS##KSUFFIX(kKeys[i], seenKeys[j])) {
 //%        foundKey = YES;
-//%        XCTAssertEqual##VSUFFIX(kValues[i], seenValues[j], @"i = %d, j = %d", i, j);
+//%        XCTAssertEqual##VSUFFIX(k##VNAME$u##s[i], seen##VNAME$u##s[j], @"i = %d, j = %d", i, j);
 //%      }
 //%    }
 //%    XCTAssertTrue(foundKey, @"i = %d", i);
 //%  }
 //%  free(seenKeys);
-//%  free(seenValues);
+//%  free(seen##VNAME$u##s);
 //%
 //%  // Stopping the enumeration.
 //%  idx = 0;
-//%  [dict enumerateKeysAndValuesUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE aValue, BOOL *stop) {
-//%    #pragma unused(aKey, aValue)
+//%  [dict enumerateKeysAnd##VNAME$u##sUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE a##VNAME$u, BOOL *stop) {
+//%    #pragma unused(aKey, a##VNAME$u)
 //%    if (idx == 1) *stop = YES;
 //%    XCTAssertNotEqual(idx, 2U);
 //%    ++idx;
@@ -134,33 +134,33 @@
 //%- (void)testEquality {
 //%  const KEY_TYPE KisP##kKeys1[] = { KEY1, KEY2, KEY3, KEY4 };
 //%  const KEY_TYPE KisP##kKeys2[] = { KEY2, KEY1, KEY4 };
-//%  const VALUE_TYPE kValues1[] = { VAL1, VAL2, VAL3 };
-//%  const VALUE_TYPE kValues2[] = { VAL1, VAL4, VAL3 };
-//%  const VALUE_TYPE kValues3[] = { VAL1, VAL2, VAL3, VAL4 };
+//%  const VALUE_TYPE k##VNAME$u##s1[] = { VAL1, VAL2, VAL3 };
+//%  const VALUE_TYPE k##VNAME$u##s2[] = { VAL1, VAL4, VAL3 };
+//%  const VALUE_TYPE k##VNAME$u##s3[] = { VAL1, VAL2, VAL3, VAL4 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict1 =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues1
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys1
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues1)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s1)];
 //%  XCTAssertNotNil(dict1);
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict1prime =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues1
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys1
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues1)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s1)];
 //%  XCTAssertNotNil(dict1prime);
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict2 =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues2
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys1
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues2)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s2
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s2)];
 //%  XCTAssertNotNil(dict2);
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict3 =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues1
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys2
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues1)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys2
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s1)];
 //%  XCTAssertNotNil(dict3);
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict4 =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues3
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys1
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues3)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s3
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s3)];
 //%  XCTAssertNotNil(dict4);
 //%
 //%  // 1/1Prime should be different objects, but equal.
@@ -169,10 +169,10 @@
 //%  // Equal, so they must have same hash.
 //%  XCTAssertEqual([dict1 hash], [dict1prime hash]);
 //%
-//%  // 2 is save keys, different values; not equal.
+//%  // 2 is same keys, different ##VNAME##s; not equal.
 //%  XCTAssertNotEqualObjects(dict1, dict2);
 //%
-//%  // 3 is different keys, samae values; not equal.
+//%  // 3 is different keys, same ##VNAME##s; not equal.
 //%  XCTAssertNotEqualObjects(dict1, dict3);
 //%
 //%  // 4 extra pair; not equal
@@ -187,11 +187,11 @@
 //%
 //%- (void)testCopy {
 //%  const KEY_TYPE KisP##kKeys[] = { KEY1, KEY2, KEY3, KEY4 };
-//%  const VALUE_TYPE kValues[] = { VAL1, VAL2, VAL3, VAL4 };
+//%  const VALUE_TYPE k##VNAME$u##s[] = { VAL1, VAL2, VAL3, VAL4 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s)];
 //%  XCTAssertNotNil(dict);
 //%
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict2 = [dict copy];
@@ -208,11 +208,11 @@
 //%
 //%- (void)testDictionaryFromDictionary {
 //%  const KEY_TYPE KisP##kKeys[] = { KEY1, KEY2, KEY3, KEY4 };
-//%  const VALUE_TYPE kValues[] = { VAL1, VAL2, VAL3, VAL4 };
+//%  const VALUE_TYPE k##VNAME$u##s[] = { VAL1, VAL2, VAL3, VAL4 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s)];
 //%  XCTAssertNotNil(dict);
 //%
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict2 =
@@ -230,56 +230,56 @@
 //%  XCTAssertNotNil(dict);
 //%
 //%  XCTAssertEqual(dict.count, 0U);
-//%  [dict setValue:VAL1 forKey:KEY1];
+//%  [dict set##VNAME$u##:VAL1 forKey:KEY1];
 //%  XCTAssertEqual(dict.count, 1U);
 //%
 //%  const KEY_TYPE KisP##kKeys[] = { KEY2, KEY3, KEY4 };
-//%  const VALUE_TYPE kValues[] = { VAL2, VAL3, VAL4 };
+//%  const VALUE_TYPE k##VNAME$u##s[] = { VAL2, VAL3, VAL4 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict2 =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s)];
 //%  XCTAssertNotNil(dict2);
 //%  [dict add##VACCESSOR##EntriesFromDictionary:dict2];
 //%  XCTAssertEqual(dict.count, 4U);
 //%
-//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, value)TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
-//%TEST_VALUE##VHELPER(dict, value, KEY2, VAL2)
-//%TEST_VALUE##VHELPER(dict, value, KEY3, VAL3)
-//%TEST_VALUE##VHELPER(dict, value, KEY4, VAL4)
+//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, VNAME)TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY2, VAL2)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY3, VAL3)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY4, VAL4)
 //%  [dict2 release];
 //%}
 //%
 //%- (void)testRemove {
 //%  const KEY_TYPE KisP##kKeys[] = { KEY1, KEY2, KEY3, KEY4 };
-//%  const VALUE_TYPE kValues[] = { VAL1, VAL2, VAL3, VAL4 };
+//%  const VALUE_TYPE k##VNAME$u##s[] = { VAL1, VAL2, VAL3, VAL4 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues
-//%           KEY_NAME$S VALUE_NAME$S                 forKeys:kKeys
-//%           KEY_NAME$S VALUE_NAME$S                   count:GPBARRAYSIZE(kValues)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s
+//%           KEY_NAME$S VALUE_NAME$S          ##VNAME$S##  forKeys:kKeys
+//%           KEY_NAME$S VALUE_NAME$S          ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s)];
 //%  XCTAssertNotNil(dict);
 //%  XCTAssertEqual(dict.count, 4U);
 //%
-//%  [dict removeValueForKey:KEY2];
+//%  [dict remove##VNAME$u##ForKey:KEY2];
 //%  XCTAssertEqual(dict.count, 3U);
-//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, value)TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
+//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, VNAME)TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
 //%VALUE_NOT_FOUND##VHELPER(dict, KEY2)
-//%TEST_VALUE##VHELPER(dict, value, KEY3, VAL3)
-//%TEST_VALUE##VHELPER(dict, value, KEY4, VAL4)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY3, VAL3)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY4, VAL4)
 //%
 //%  // Remove again does nothing.
-//%  [dict removeValueForKey:KEY2];
+//%  [dict remove##VNAME$u##ForKey:KEY2];
 //%  XCTAssertEqual(dict.count, 3U);
-//%TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
 //%VALUE_NOT_FOUND##VHELPER(dict, KEY2)
-//%TEST_VALUE##VHELPER(dict, value, KEY3, VAL3)
-//%TEST_VALUE##VHELPER(dict, value, KEY4, VAL4)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY3, VAL3)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY4, VAL4)
 //%
-//%  [dict removeValueForKey:KEY4];
+//%  [dict remove##VNAME$u##ForKey:KEY4];
 //%  XCTAssertEqual(dict.count, 2U);
-//%TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
 //%VALUE_NOT_FOUND##VHELPER(dict, KEY2)
-//%TEST_VALUE##VHELPER(dict, value, KEY3, VAL3)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY3, VAL3)
 //%VALUE_NOT_FOUND##VHELPER(dict, KEY4)
 //%
 //%  [dict removeAll];
@@ -293,45 +293,45 @@
 //%
 //%- (void)testInplaceMutation {
 //%  const KEY_TYPE KisP##kKeys[] = { KEY1, KEY2, KEY3, KEY4 };
-//%  const VALUE_TYPE kValues[] = { VAL1, VAL2, VAL3, VAL4 };
+//%  const VALUE_TYPE k##VNAME$u##s[] = { VAL1, VAL2, VAL3, VAL4 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues
-//%           KEY_NAME$S VALUE_NAME$S                 forKeys:kKeys
-//%           KEY_NAME$S VALUE_NAME$S                   count:GPBARRAYSIZE(kValues)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s
+//%           KEY_NAME$S VALUE_NAME$S          ##VNAME$S##  forKeys:kKeys
+//%           KEY_NAME$S VALUE_NAME$S          ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s)];
 //%  XCTAssertNotNil(dict);
 //%  XCTAssertEqual(dict.count, 4U);
-//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, value)TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
-//%TEST_VALUE##VHELPER(dict, value, KEY2, VAL2)
-//%TEST_VALUE##VHELPER(dict, value, KEY3, VAL3)
-//%TEST_VALUE##VHELPER(dict, value, KEY4, VAL4)
+//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, VNAME)TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY2, VAL2)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY3, VAL3)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY4, VAL4)
 //%
-//%  [dict setValue:VAL4 forKey:KEY1];
+//%  [dict set##VNAME$u##:VAL4 forKey:KEY1];
 //%  XCTAssertEqual(dict.count, 4U);
-//%TEST_VALUE##VHELPER(dict, value, KEY1, VAL4)
-//%TEST_VALUE##VHELPER(dict, value, KEY2, VAL2)
-//%TEST_VALUE##VHELPER(dict, value, KEY3, VAL3)
-//%TEST_VALUE##VHELPER(dict, value, KEY4, VAL4)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL4)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY2, VAL2)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY3, VAL3)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY4, VAL4)
 //%
-//%  [dict setValue:VAL2 forKey:KEY4];
+//%  [dict set##VNAME$u##:VAL2 forKey:KEY4];
 //%  XCTAssertEqual(dict.count, 4U);
-//%TEST_VALUE##VHELPER(dict, value, KEY1, VAL4)
-//%TEST_VALUE##VHELPER(dict, value, KEY2, VAL2)
-//%TEST_VALUE##VHELPER(dict, value, KEY3, VAL3)
-//%TEST_VALUE##VHELPER(dict, value, KEY4, VAL2)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL4)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY2, VAL2)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY3, VAL3)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY4, VAL2)
 //%
 //%  const KEY_TYPE KisP##kKeys2[] = { KEY2, KEY3 };
-//%  const VALUE_TYPE kValues2[] = { VAL3, VAL1 };
+//%  const VALUE_TYPE k##VNAME$u##s2[] = { VAL3, VAL1 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict2 =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues2
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys2
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues2)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s2
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys2
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s2)];
 //%  XCTAssertNotNil(dict2);
 //%  [dict add##VACCESSOR##EntriesFromDictionary:dict2];
 //%  XCTAssertEqual(dict.count, 4U);
-//%TEST_VALUE##VHELPER(dict, value, KEY1, VAL4)
-//%TEST_VALUE##VHELPER(dict, value, KEY2, VAL3)
-//%TEST_VALUE##VHELPER(dict, value, KEY3, VAL1)
-//%TEST_VALUE##VHELPER(dict, value, KEY4, VAL2)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL4)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY2, VAL3)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY3, VAL1)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY4, VAL2)
 //%
 //%  [dict2 release];
 //%  [dict release];
@@ -466,10 +466,10 @@
 //%  // Equal, so they must have same hash.
 //%  XCTAssertEqual([dict1 hash], [dict1prime hash]);
 //%
-//%  // 2 is save keys, different values; not equal.
+//%  // 2 is same keys, different values; not equal.
 //%  XCTAssertNotEqualObjects(dict1, dict2);
 //%
-//%  // 3 is different keys, samae values; not equal.
+//%  // 3 is different keys, same values; not equal.
 //%  XCTAssertNotEqualObjects(dict1, dict3);
 //%
 //%  // 4 extra pair; not equal
@@ -709,9 +709,9 @@
 //%PDDM-DEFINE DECLARE_VALUE_STORAGEOBJECT(VALUE_TYPE, NAME)
 // Empty
 //%PDDM-DEFINE VALUE_NOT_FOUNDOBJECT(DICT, KEY)
-//%  XCTAssertNil([DICT valueForKey:KEY]);
+//%  XCTAssertNil([DICT objectForKey:KEY]);
 //%PDDM-DEFINE TEST_VALUEOBJECT(DICT, STORAGE, KEY, VALUE)
-//%  XCTAssertEqualObjects([DICT valueForKey:KEY], VALUE);
+//%  XCTAssertEqualObjects([DICT objectForKey:KEY], VALUE);
 //%PDDM-DEFINE COMPARE_KEYSObjects(KEY1, KEY2)
 //%[KEY1 isEqual:KEY2]
 
@@ -768,12 +768,12 @@
 //TODO(thomasvl): enum tests
 
 //%PDDM-DEFINE BOOL_TESTS_FOR_POD_VALUE(VALUE_NAME, VALUE_TYPE, VAL1, VAL2)
-//%BOOL_TESTS_COMMON(Bool, BOOL, , , YES, NO, VALUE_NAME, VALUE_TYPE, , POD, VAL1, VAL2)
+//%BOOL_TESTS_COMMON(Bool, BOOL, , , YES, NO, VALUE_NAME, VALUE_TYPE, , value, POD, VAL1, VAL2)
 
 //%PDDM-DEFINE TESTS_FOR_BOOL_KEY_OBJECT_VALUE(VALUE_NAME, VALUE_TYPE, VAL1, VAL2)
-//%BOOL_TESTS_COMMON(Bool, BOOL, , , YES, NO, VALUE_NAME, VALUE_TYPE, Objects, OBJECT, VAL1, VAL2)
+//%BOOL_TESTS_COMMON(Bool, BOOL, , , YES, NO, VALUE_NAME, VALUE_TYPE, Objects, object, OBJECT, VAL1, VAL2)
 
-//%PDDM-DEFINE BOOL_TESTS_COMMON(KEY_NAME, KEY_TYPE, KisP, KSUFFIX, KEY1, KEY2, VALUE_NAME, VALUE_TYPE, VSUFFIX, VHELPER, VAL1, VAL2)
+//%PDDM-DEFINE BOOL_TESTS_COMMON(KEY_NAME, KEY_TYPE, KisP, KSUFFIX, KEY1, KEY2, VALUE_NAME, VALUE_TYPE, VSUFFIX, VNAME, VHELPER, VAL1, VAL2)
 //%#pragma mark - KEY_NAME -> VALUE_NAME
 //%
 //%@interface GPB##KEY_NAME##VALUE_NAME##DictionaryTests : XCTestCase
@@ -786,45 +786,45 @@
 //%  XCTAssertNotNil(dict);
 //%  XCTAssertEqual(dict.count, 0U);
 //%VALUE_NOT_FOUND##VHELPER(dict, KEY1)
-//%  [dict enumerateKeysAndValuesUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE aValue, BOOL *stop) {
-//%    #pragma unused(aKey, aValue, stop)
+//%  [dict enumerateKeysAnd##VNAME$u##sUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE a##VNAME$u##, BOOL *stop) {
+//%    #pragma unused(aKey, a##VNAME$u##, stop)
 //%    XCTFail(@"Shouldn't get here!");
 //%  }];
 //%  [dict release];
 //%}
 //%
 //%- (void)testOne {
-//%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict = [GPB##KEY_NAME##VALUE_NAME##Dictionary dictionaryWithValue:VAL1 forKey:KEY1];
+//%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict = [GPB##KEY_NAME##VALUE_NAME##Dictionary dictionaryWith##VNAME$u##:VAL1 forKey:KEY1];
 //%  XCTAssertNotNil(dict);
 //%  XCTAssertEqual(dict.count, 1U);
-//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, value)TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
+//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, VNAME)TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
 //%VALUE_NOT_FOUND##VHELPER(dict, KEY2)
-//%  [dict enumerateKeysAndValuesUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE aValue, BOOL *stop) {
+//%  [dict enumerateKeysAnd##VNAME$u##sUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE a##VNAME$u, BOOL *stop) {
 //%    XCTAssertEqual##KSUFFIX(aKey, KEY1);
-//%    XCTAssertEqual##VSUFFIX(aValue, VAL1);
+//%    XCTAssertEqual##VSUFFIX(a##VNAME$u, VAL1);
 //%    XCTAssertNotEqual(stop, NULL);
 //%  }];
 //%}
 //%
 //%- (void)testBasics {
 //%  const KEY_TYPE KisP##kKeys[] = { KEY1, KEY2 };
-//%  const VALUE_TYPE kValues[] = { VAL1, VAL2 };
+//%  const VALUE_TYPE k##VNAME$u##s[] = { VAL1, VAL2 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s)];
 //%  XCTAssertNotNil(dict);
 //%  XCTAssertEqual(dict.count, 2U);
-//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, value)TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
-//%TEST_VALUE##VHELPER(dict, value, KEY2, VAL2)
+//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, VNAME)TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY2, VAL2)
 //%
 //%  __block NSUInteger idx = 0;
 //%  KEY_TYPE KisP##*seenKeys = malloc(2 * sizeof(KEY_TYPE##KisP));
-//%  VALUE_TYPE *seenValues = malloc(2 * sizeof(VALUE_TYPE));
-//%  [dict enumerateKeysAndValuesUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE aValue, BOOL *stop) {
+//%  VALUE_TYPE *seen##VNAME$u##s = malloc(2 * sizeof(VALUE_TYPE));
+//%  [dict enumerateKeysAnd##VNAME$u##sUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE a##VNAME$u##, BOOL *stop) {
 //%    XCTAssertLessThan(idx, 2U);
 //%    seenKeys[idx] = aKey;
-//%    seenValues[idx] = aValue;
+//%    seen##VNAME$u##s[idx] = a##VNAME$u;
 //%    XCTAssertNotEqual(stop, NULL);
 //%    ++idx;
 //%  }];
@@ -833,18 +833,18 @@
 //%    for (int j = 0; (j < 2) && !foundKey; ++j) {
 //%      if (COMPARE_KEYS##KSUFFIX(kKeys[i], seenKeys[j])) {
 //%        foundKey = YES;
-//%        XCTAssertEqual##VSUFFIX(kValues[i], seenValues[j], @"i = %d, j = %d", i, j);
+//%        XCTAssertEqual##VSUFFIX(k##VNAME$u##s[i], seen##VNAME$u##s[j], @"i = %d, j = %d", i, j);
 //%      }
 //%    }
 //%    XCTAssertTrue(foundKey, @"i = %d", i);
 //%  }
 //%  free(seenKeys);
-//%  free(seenValues);
+//%  free(seen##VNAME$u##s);
 //%
 //%  // Stopping the enumeration.
 //%  idx = 0;
-//%  [dict enumerateKeysAndValuesUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE aValue, BOOL *stop) {
-//%    #pragma unused(aKey, aValue)
+//%  [dict enumerateKeysAnd##VNAME$u##sUsingBlock:^(KEY_TYPE KisP##aKey, VALUE_TYPE a##VNAME$u##, BOOL *stop) {
+//%    #pragma unused(aKey, a##VNAME$u)
 //%    if (idx == 0) *stop = YES;
 //%    XCTAssertNotEqual(idx, 2U);
 //%    ++idx;
@@ -855,33 +855,33 @@
 //%- (void)testEquality {
 //%  const KEY_TYPE KisP##kKeys1[] = { KEY1, KEY2 };
 //%  const KEY_TYPE KisP##kKeys2[] = { KEY2, KEY1 };
-//%  const VALUE_TYPE kValues1[] = { VAL1, VAL2 };
-//%  const VALUE_TYPE kValues2[] = { VAL2, VAL1 };
-//%  const VALUE_TYPE kValues3[] = { VAL2 };
+//%  const VALUE_TYPE k##VNAME$u##s1[] = { VAL1, VAL2 };
+//%  const VALUE_TYPE k##VNAME$u##s2[] = { VAL2, VAL1 };
+//%  const VALUE_TYPE k##VNAME$u##s3[] = { VAL2 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict1 =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues1
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys1
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues1)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s1)];
 //%  XCTAssertNotNil(dict1);
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict1prime =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues1
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys1
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues1)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s1)];
 //%  XCTAssertNotNil(dict1prime);
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict2 =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues2
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys1
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues2)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s2
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s2)];
 //%  XCTAssertNotNil(dict2);
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict3 =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues1
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys2
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues1)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys2
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s1)];
 //%  XCTAssertNotNil(dict3);
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict4 =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues3
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys1
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues3)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s3
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys1
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s3)];
 //%  XCTAssertNotNil(dict4);
 //%
 //%  // 1/1Prime should be different objects, but equal.
@@ -890,10 +890,10 @@
 //%  // Equal, so they must have same hash.
 //%  XCTAssertEqual([dict1 hash], [dict1prime hash]);
 //%
-//%  // 2 is save keys, different values; not equal.
+//%  // 2 is same keys, different ##VNAME##s; not equal.
 //%  XCTAssertNotEqualObjects(dict1, dict2);
 //%
-//%  // 3 is different keys, samae values; not equal.
+//%  // 3 is different keys, same ##VNAME##s; not equal.
 //%  XCTAssertNotEqualObjects(dict1, dict3);
 //%
 //%  // 4 Fewer pairs; not equal
@@ -908,11 +908,11 @@
 //%
 //%- (void)testCopy {
 //%  const KEY_TYPE KisP##kKeys[] = { KEY1, KEY2 };
-//%  const VALUE_TYPE kValues[] = { VAL1, VAL2 };
+//%  const VALUE_TYPE k##VNAME$u##s[] = { VAL1, VAL2 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s)];
 //%  XCTAssertNotNil(dict);
 //%
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict2 = [dict copy];
@@ -929,11 +929,11 @@
 //%
 //%- (void)testDictionaryFromDictionary {
 //%  const KEY_TYPE KisP##kKeys[] = { KEY1, KEY2 };
-//%  const VALUE_TYPE kValues[] = { VAL1, VAL2 };
+//%  const VALUE_TYPE k##VNAME$u##s[] = { VAL1, VAL2 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s)];
 //%  XCTAssertNotNil(dict);
 //%
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict2 =
@@ -951,43 +951,43 @@
 //%  XCTAssertNotNil(dict);
 //%
 //%  XCTAssertEqual(dict.count, 0U);
-//%  [dict setValue:VAL1 forKey:KEY1];
+//%  [dict set##VNAME$u:VAL1 forKey:KEY1];
 //%  XCTAssertEqual(dict.count, 1U);
 //%
 //%  const KEY_TYPE KisP##kKeys[] = { KEY2 };
-//%  const VALUE_TYPE kValues[] = { VAL2 };
+//%  const VALUE_TYPE k##VNAME$u##s[] = { VAL2 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict2 =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s)];
 //%  XCTAssertNotNil(dict2);
 //%  [dict addEntriesFromDictionary:dict2];
 //%  XCTAssertEqual(dict.count, 2U);
 //%
-//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, value)TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
-//%TEST_VALUE##VHELPER(dict, value, KEY2, VAL2)
+//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, VNAME)TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY2, VAL2)
 //%  [dict2 release];
 //%}
 //%
 //%- (void)testRemove {
 //%  const KEY_TYPE KisP##kKeys[] = { KEY1, KEY2};
-//%  const VALUE_TYPE kValues[] = { VAL1, VAL2 };
+//%  const VALUE_TYPE k##VNAME$u##s[] = { VAL1, VAL2 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues
-//%           KEY_NAME$S VALUE_NAME$S                 forKeys:kKeys
-//%           KEY_NAME$S VALUE_NAME$S                   count:GPBARRAYSIZE(kValues)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s
+//%           KEY_NAME$S VALUE_NAME$S          ##VNAME$S##  forKeys:kKeys
+//%           KEY_NAME$S VALUE_NAME$S          ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s)];
 //%  XCTAssertNotNil(dict);
 //%  XCTAssertEqual(dict.count, 2U);
 //%
-//%  [dict removeValueForKey:KEY2];
+//%  [dict remove##VNAME$u##ForKey:KEY2];
 //%  XCTAssertEqual(dict.count, 1U);
-//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, value)TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
+//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, VNAME)TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
 //%VALUE_NOT_FOUND##VHELPER(dict, KEY2)
 //%
 //%  // Remove again does nothing.
-//%  [dict removeValueForKey:KEY2];
+//%  [dict remove##VNAME$u##ForKey:KEY2];
 //%  XCTAssertEqual(dict.count, 1U);
-//%TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
 //%VALUE_NOT_FOUND##VHELPER(dict, KEY2)
 //%
 //%  [dict removeAll];
@@ -999,37 +999,37 @@
 //%
 //%- (void)testInplaceMutation {
 //%  const KEY_TYPE KisP##kKeys[] = { KEY1, KEY2 };
-//%  const VALUE_TYPE kValues[] = { VAL1, VAL2 };
+//%  const VALUE_TYPE k##VNAME$u##s[] = { VAL1, VAL2 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues
-//%           KEY_NAME$S VALUE_NAME$S                 forKeys:kKeys
-//%           KEY_NAME$S VALUE_NAME$S                   count:GPBARRAYSIZE(kValues)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s
+//%           KEY_NAME$S VALUE_NAME$S          ##VNAME$S##  forKeys:kKeys
+//%           KEY_NAME$S VALUE_NAME$S          ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s)];
 //%  XCTAssertNotNil(dict);
 //%  XCTAssertEqual(dict.count, 2U);
-//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, value)TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
-//%TEST_VALUE##VHELPER(dict, value, KEY2, VAL2)
+//%DECLARE_VALUE_STORAGE##VHELPER(VALUE_TYPE, VNAME)TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY2, VAL2)
 //%
-//%  [dict setValue:VAL2 forKey:KEY1];
+//%  [dict set##VNAME$u##:VAL2 forKey:KEY1];
 //%  XCTAssertEqual(dict.count, 2U);
-//%TEST_VALUE##VHELPER(dict, value, KEY1, VAL2)
-//%TEST_VALUE##VHELPER(dict, value, KEY2, VAL2)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL2)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY2, VAL2)
 //%
-//%  [dict setValue:VAL1 forKey:KEY2];
+//%  [dict set##VNAME$u##:VAL1 forKey:KEY2];
 //%  XCTAssertEqual(dict.count, 2U);
-//%TEST_VALUE##VHELPER(dict, value, KEY1, VAL2)
-//%TEST_VALUE##VHELPER(dict, value, KEY2, VAL1)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL2)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY2, VAL1)
 //%
 //%  const KEY_TYPE KisP##kKeys2[] = { KEY2, KEY1 };
-//%  const VALUE_TYPE kValues2[] = { VAL2, VAL1 };
+//%  const VALUE_TYPE k##VNAME$u##s2[] = { VAL2, VAL1 };
 //%  GPB##KEY_NAME##VALUE_NAME##Dictionary *dict2 =
-//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWithValues:kValues2
-//%           KEY_NAME$S VALUE_NAME$S                        forKeys:kKeys2
-//%           KEY_NAME$S VALUE_NAME$S                          count:GPBARRAYSIZE(kValues2)];
+//%      [[GPB##KEY_NAME##VALUE_NAME##Dictionary alloc] initWith##VNAME$u##s:k##VNAME$u##s2
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##  forKeys:kKeys2
+//%           KEY_NAME$S VALUE_NAME$S                 ##VNAME$S##    count:GPBARRAYSIZE(k##VNAME$u##s2)];
 //%  XCTAssertNotNil(dict2);
 //%  [dict addEntriesFromDictionary:dict2];
 //%  XCTAssertEqual(dict.count, 2U);
-//%TEST_VALUE##VHELPER(dict, value, KEY1, VAL1)
-//%TEST_VALUE##VHELPER(dict, value, KEY2, VAL2)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY1, VAL1)
+//%TEST_VALUE##VHELPER(dict, VNAME, KEY2, VAL2)
 //%
 //%  [dict2 release];
 //%  [dict release];
diff --git a/objectivec/Tests/GPBMessageTests+Merge.m b/objectivec/Tests/GPBMessageTests+Merge.m
index 3b6fdbd4..a3908aab 100644
--- a/objectivec/Tests/GPBMessageTests+Merge.m
+++ b/objectivec/Tests/GPBMessageTests+Merge.m
@@ -676,20 +676,21 @@
   TestAllTypes *subMsg = [TestAllTypes message];
   subMsg.repeatedInt32Array = [GPBInt32Array arrayWithValue:100];
   msg1.mapInt32Message = [GPBInt32ObjectDictionary dictionary];
-  [msg1.mapInt32Message setValue:subMsg forKey:0];
+  [msg1.mapInt32Message setObject:subMsg forKey:0];
   subMsg = nil;
 
   subMsg = [TestAllTypes message];
   subMsg.repeatedInt32Array = [GPBInt32Array arrayWithValue:101];
   msg2.mapInt32Message = [GPBInt32ObjectDictionary dictionary];
-  [msg2.mapInt32Message setValue:subMsg forKey:0];
+  
+  [msg2.mapInt32Message setObject:subMsg forKey:0];
   subMsg = nil;
 
   [msg1 mergeFrom:msg2];
 
   // Checks repeated field is overwritten.
   XCTAssertEqual(msg1.mapInt32Message.count, 1U);
-  subMsg = [msg1.mapInt32Message valueForKey:0];
+  subMsg = [msg1.mapInt32Message objectForKey:0];
   XCTAssertNotNil(subMsg);
   XCTAssertEqual(subMsg.repeatedInt32Array.count, 1U);
   XCTAssertEqual([subMsg.repeatedInt32Array valueAtIndex:0], 101);
diff --git a/objectivec/Tests/GPBMessageTests+Runtime.m b/objectivec/Tests/GPBMessageTests+Runtime.m
index 8942a843..e536bfec 100644
--- a/objectivec/Tests/GPBMessageTests+Runtime.m
+++ b/objectivec/Tests/GPBMessageTests+Runtime.m
@@ -2059,9 +2059,9 @@
 
   // Ensure the messages are unique per map.
   [msg1.mapInt32ForeignMessage
-      enumerateKeysAndValuesUsingBlock:^(int32_t key, id value, BOOL *stop) {
+      enumerateKeysAndObjectsUsingBlock:^(int32_t key, id value, BOOL *stop) {
 #pragma unused(stop)
-        ForeignMessage *subMsg2 = [msg2.mapInt32ForeignMessage valueForKey:key];
+        ForeignMessage *subMsg2 = [msg2.mapInt32ForeignMessage objectForKey:key];
         XCTAssertNotEqual(value, subMsg2);  // Ptr compare, new object.
       }];
 }
@@ -2075,7 +2075,7 @@
   // Add an uninitialized message.
   TestRequired *subMsg = [[TestRequired alloc] init];
   msg.mapField = [GPBInt32ObjectDictionary dictionary];
-  [msg.mapField setValue:subMsg forKey:0];
+  [msg.mapField setObject:subMsg forKey:0];
   XCTAssertFalse(msg.initialized);
 
   // Initialize uninitialized message
diff --git a/objectivec/Tests/GPBMessageTests+Serialization.m b/objectivec/Tests/GPBMessageTests+Serialization.m
index ae4be9e5..4dcca7a3 100644
--- a/objectivec/Tests/GPBMessageTests+Serialization.m
+++ b/objectivec/Tests/GPBMessageTests+Serialization.m
@@ -994,16 +994,16 @@ static NSData *DataFromCStr(const char *str) {
   val2.optionalInt32 = 129;
   [msg.mapStringMessage setValue:val1 forKey:@"228"];
   [msg.mapStringMessage setValue:val2 forKey:@"2029"];
-  [msg.mapInt32Bytes setValue:DataFromCStr("1030 bytes") forKey:230];
-  [msg.mapInt32Bytes setValue:DataFromCStr("131") forKey:2031];
+  [msg.mapInt32Bytes setObject:DataFromCStr("1030 bytes") forKey:230];
+  [msg.mapInt32Bytes setObject:DataFromCStr("131") forKey:2031];
   [msg.mapInt32Enum setValue:Message2_Enum_Bar forKey:232];
   [msg.mapInt32Enum setValue:Message2_Enum_Baz forKey:2033];
   Message2 *val3 = [[Message2 alloc] init];
   val3.optionalInt32 = 1034;
   Message2 *val4 = [[Message2 alloc] init];
   val4.optionalInt32 = 135;
-  [msg.mapInt32Message setValue:val3 forKey:234];
-  [msg.mapInt32Message setValue:val4 forKey:2035];
+  [msg.mapInt32Message setObject:val3 forKey:234];
+  [msg.mapInt32Message setObject:val4 forKey:2035];
 
   NSData *data = [msg data];
   Message2 *msg2 = [[Message2 alloc] initWithData:data error:NULL];
diff --git a/objectivec/Tests/GPBObjectiveCPlusPlusTest.mm b/objectivec/Tests/GPBObjectiveCPlusPlusTest.mm
new file mode 100644
index 00000000..9ba8fd0b
--- /dev/null
+++ b/objectivec/Tests/GPBObjectiveCPlusPlusTest.mm
@@ -0,0 +1,69 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2013 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#import "GPBTestUtilities.h"
+
+
+//
+// This is just a compile test (here to make sure things never regress).
+//
+// Objective C++ can run into issues with how the NS_ENUM/CF_ENUM declartion
+// works because of the C++ spec being used for that compilation unit. So
+// the fact that these imports all work without errors/warning means things
+// are still good.
+//
+// The "well know types" should have cross file enums needing imports.
+#import "GPBProtocolBuffers.h"
+// Some of the tests explicitly use cross file enums also.
+#import "google/protobuf/Unittest.pbobjc.h"
+#import "google/protobuf/UnittestImport.pbobjc.h"
+
+// Sanity check the conditions of the test within the Xcode project.
+#if !__cplusplus
+  #error This isn't compiled as Objective C++?
+#elif __cplusplus >= 201103L
+  // If this trips, it means the Xcode default might have change (or someone
+  // edited the testing project) and it might be time to revisit the GPB_ENUM
+  // define in GPBBootstrap.h.
+  #warning Did the Xcode default for C++ spec change?
+#endif
+
+
+// Dummy XCTest.
+@interface GPBObjectiveCPlusPlusTests : GPBTestCase
+@end
+
+@implementation GPBObjectiveCPlusPlusTests
+- (void)testCPlusPlus {
+  // Nothing, This was a compile test.
+  XCTAssertTrue(YES);
+}
+@end
diff --git a/objectivec/Tests/GPBTestUtilities.m b/objectivec/Tests/GPBTestUtilities.m
index 3d85c744..726761a7 100644
--- a/objectivec/Tests/GPBTestUtilities.m
+++ b/objectivec/Tests/GPBTestUtilities.m
@@ -1110,7 +1110,7 @@ const uint32_t kGPBDefaultRepeatCount = 2;
     [dataStr release];
 
     NSData *data = [[NSData alloc] initWithUint32_gpbtu:i + 1];
-    [message.mapInt32Bytes setValue:data forKey:113 + i * 100];
+    [message.mapInt32Bytes setObject:data forKey:113 + i * 100];
     [data release];
 
     [message.mapInt32Enum
@@ -1119,7 +1119,7 @@ const uint32_t kGPBDefaultRepeatCount = 2;
 
     ForeignMessage *subMsg = [[ForeignMessage alloc] init];
     subMsg.c = i + 1;
-    [message.mapInt32ForeignMessage setValue:subMsg forKey:115 + i * 100];
+    [message.mapInt32ForeignMessage setObject:subMsg forKey:115 + i * 100];
     [subMsg release];
   }
 }
diff --git a/objectivec/Tests/GPBWireFormatTests.m b/objectivec/Tests/GPBWireFormatTests.m
index c1244212..3fab20b7 100644
--- a/objectivec/Tests/GPBWireFormatTests.m
+++ b/objectivec/Tests/GPBWireFormatTests.m
@@ -167,12 +167,12 @@ const int kUnknownTypeId = 1550055;
   XCTAssertEqual([raw.itemArray[2] typeId], kUnknownTypeId);
 
   TestMessageSetExtension1* message1 =
-      [TestMessageSetExtension1 parseFromData:[raw.itemArray[0] message]
+      [TestMessageSetExtension1 parseFromData:[((RawMessageSet_Item*)raw.itemArray[0]) message]
                                         error:NULL];
   XCTAssertEqual(message1.i, 123);
 
   TestMessageSetExtension2* message2 =
-      [TestMessageSetExtension2 parseFromData:[raw.itemArray[1] message]
+      [TestMessageSetExtension2 parseFromData:[((RawMessageSet_Item*)raw.itemArray[1]) message]
                                         error:NULL];
   XCTAssertEqualObjects(message2.str, @"foo");
 
diff --git a/objectivec/google/protobuf/Descriptor.pbobjc.h b/objectivec/google/protobuf/Descriptor.pbobjc.h
index 2a86a7e1..70cb7447 100644
--- a/objectivec/google/protobuf/Descriptor.pbobjc.h
+++ b/objectivec/google/protobuf/Descriptor.pbobjc.h
@@ -344,6 +344,7 @@ typedef GPB_ENUM(GPBFieldDescriptorProto_FieldNumber) {
   GPBFieldDescriptorProto_FieldNumber_DefaultValue = 7,
   GPBFieldDescriptorProto_FieldNumber_Options = 8,
   GPBFieldDescriptorProto_FieldNumber_OneofIndex = 9,
+  GPBFieldDescriptorProto_FieldNumber_JsonName = 10,
 };
 
 // Describes a field within a message.
@@ -389,6 +390,13 @@ typedef GPB_ENUM(GPBFieldDescriptorProto_FieldNumber) {
 @property(nonatomic, readwrite) BOOL hasOneofIndex;
 @property(nonatomic, readwrite) int32_t oneofIndex;
 
+// JSON name of this field. The value is set by protocol compiler. If the
+// user has set a "json_name" option on this field, that option's value
+// will be used. Otherwise, it's deduced from the field's name by converting
+// it to camelCase.
+@property(nonatomic, readwrite) BOOL hasJsonName;
+@property(nonatomic, readwrite, copy, null_resettable) NSString *jsonName;
+
 @property(nonatomic, readwrite) BOOL hasOptions;
 @property(nonatomic, readwrite, strong, null_resettable) GPBFieldOptions *options;
 
diff --git a/objectivec/google/protobuf/Descriptor.pbobjc.m b/objectivec/google/protobuf/Descriptor.pbobjc.m
index 8d69867b..e3e44c48 100644
--- a/objectivec/google/protobuf/Descriptor.pbobjc.m
+++ b/objectivec/google/protobuf/Descriptor.pbobjc.m
@@ -578,6 +578,7 @@ typedef struct GPBDescriptorProto_ReservedRange__storage_ {
 @dynamic hasExtendee, extendee;
 @dynamic hasDefaultValue, defaultValue;
 @dynamic hasOneofIndex, oneofIndex;
+@dynamic hasJsonName, jsonName;
 @dynamic hasOptions, options;
 
 typedef struct GPBFieldDescriptorProto__storage_ {
@@ -591,6 +592,7 @@ typedef struct GPBFieldDescriptorProto__storage_ {
   NSString *typeName;
   NSString *defaultValue;
   GPBFieldOptions *options;
+  NSString *jsonName;
 } GPBFieldDescriptorProto__storage_;
 
 // This method is threadsafe because it is initially called
@@ -679,7 +681,7 @@ typedef struct GPBFieldDescriptorProto__storage_ {
       {
         .name = "options",
         .number = GPBFieldDescriptorProto_FieldNumber_Options,
-        .hasIndex = 8,
+        .hasIndex = 9,
         .flags = GPBFieldOptional,
         .dataType = GPBDataTypeMessage,
         .offset = offsetof(GPBFieldDescriptorProto__storage_, options),
@@ -698,6 +700,17 @@ typedef struct GPBFieldDescriptorProto__storage_ {
         .dataTypeSpecific.className = NULL,
         .fieldOptions = NULL,
       },
+      {
+        .name = "jsonName",
+        .number = GPBFieldDescriptorProto_FieldNumber_JsonName,
+        .hasIndex = 8,
+        .flags = GPBFieldOptional,
+        .dataType = GPBDataTypeString,
+        .offset = offsetof(GPBFieldDescriptorProto__storage_, jsonName),
+        .defaultValue.valueString = nil,
+        .dataTypeSpecific.className = NULL,
+        .fieldOptions = NULL,
+      },
     };
     static GPBMessageEnumDescription enums[] = {
       { .enumDescriptorFunc = GPBFieldDescriptorProto_Type_EnumDescriptor },
diff --git a/python/google/protobuf/pyext/message.cc b/python/google/protobuf/pyext/message.cc
index 63d53136..9318c834 100644
--- a/python/google/protobuf/pyext/message.cc
+++ b/python/google/protobuf/pyext/message.cc
@@ -2893,6 +2893,14 @@ bool InitProto2MessageModule(PyObject *m) {
     }
 
     Py_INCREF(mutable_mapping);
+#if PY_MAJOR_VERSION >= 3
+    PyObject* bases = PyTuple_New(1);
+    PyTuple_SET_ITEM(bases, 0, mutable_mapping.get());
+
+    ScalarMapContainer_Type = 
+        PyType_FromSpecWithBases(&ScalarMapContainer_Type_spec, bases);
+    PyModule_AddObject(m, "ScalarMapContainer", ScalarMapContainer_Type);
+#else
     ScalarMapContainer_Type.tp_base =
         reinterpret_cast<PyTypeObject*>(mutable_mapping.get());
 
@@ -2902,6 +2910,7 @@ bool InitProto2MessageModule(PyObject *m) {
 
     PyModule_AddObject(m, "ScalarMapContainer",
                        reinterpret_cast<PyObject*>(&ScalarMapContainer_Type));
+#endif
 
     if (PyType_Ready(&ScalarMapIterator_Type) < 0) {
       return false;
@@ -2910,6 +2919,12 @@ bool InitProto2MessageModule(PyObject *m) {
     PyModule_AddObject(m, "ScalarMapIterator",
                        reinterpret_cast<PyObject*>(&ScalarMapIterator_Type));
 
+
+#if PY_MAJOR_VERSION >= 3
+    MessageMapContainer_Type = 
+        PyType_FromSpecWithBases(&MessageMapContainer_Type_spec, bases);
+    PyModule_AddObject(m, "MessageMapContainer", MessageMapContainer_Type);
+#else
     Py_INCREF(mutable_mapping);
     MessageMapContainer_Type.tp_base =
         reinterpret_cast<PyTypeObject*>(mutable_mapping.get());
@@ -2920,6 +2935,7 @@ bool InitProto2MessageModule(PyObject *m) {
 
     PyModule_AddObject(m, "MessageMapContainer",
                        reinterpret_cast<PyObject*>(&MessageMapContainer_Type));
+#endif
 
     if (PyType_Ready(&MessageMapIterator_Type) < 0) {
       return false;
diff --git a/python/google/protobuf/pyext/message_map_container.cc b/python/google/protobuf/pyext/message_map_container.cc
index a4a7fbfe..f54d2015 100644
--- a/python/google/protobuf/pyext/message_map_container.cc
+++ b/python/google/protobuf/pyext/message_map_container.cc
@@ -84,7 +84,12 @@ PyObject* NewContainer(CMessage* parent,
     return NULL;
   }
 
+#if PY_MAJOR_VERSION >= 3
+  PyObject* obj = PyType_GenericAlloc(
+        reinterpret_cast<PyTypeObject *>(MessageMapContainer_Type), 0);
+#else
   PyObject* obj = PyType_GenericAlloc(&MessageMapContainer_Type, 0);
+#endif
   if (obj == NULL) {
     return PyErr_Format(PyExc_RuntimeError,
                         "Could not allocate new container.");
@@ -458,44 +463,67 @@ PyObject* IterNext(PyObject* _self) {
 
 }  // namespace message_map_iterator
 
-PyTypeObject MessageMapContainer_Type = {
-  PyVarObject_HEAD_INIT(&PyType_Type, 0)
-  FULL_MODULE_NAME ".MessageMapContainer",  //  tp_name
-  sizeof(MessageMapContainer),         //  tp_basicsize
-  0,                                   //  tp_itemsize
-  message_map_container::Dealloc,      //  tp_dealloc
-  0,                                   //  tp_print
-  0,                                   //  tp_getattr
-  0,                                   //  tp_setattr
-  0,                                   //  tp_compare
-  0,                                   //  tp_repr
-  0,                                   //  tp_as_number
-  0,                                   //  tp_as_sequence
-  &message_map_container::MpMethods,   //  tp_as_mapping
-  0,                                   //  tp_hash
-  0,                                   //  tp_call
-  0,                                   //  tp_str
-  0,                                   //  tp_getattro
-  0,                                   //  tp_setattro
-  0,                                   //  tp_as_buffer
-  Py_TPFLAGS_DEFAULT,                  //  tp_flags
-  "A map container for message",       //  tp_doc
-  0,                                   //  tp_traverse
-  0,                                   //  tp_clear
-  0,                                   //  tp_richcompare
-  0,                                   //  tp_weaklistoffset
-  message_map_container::GetIterator,  //  tp_iter
-  0,                                   //  tp_iternext
-  message_map_container::Methods,      //  tp_methods
-  0,                                   //  tp_members
-  0,                                   //  tp_getset
-  0,                                   //  tp_base
-  0,                                   //  tp_dict
-  0,                                   //  tp_descr_get
-  0,                                   //  tp_descr_set
-  0,                                   //  tp_dictoffset
-  0,                                   //  tp_init
-};
+#if PY_MAJOR_VERSION >= 3
+  static PyType_Slot MessageMapContainer_Type_slots[] = {
+      {Py_tp_dealloc, (void *)message_map_container::Dealloc},
+      {Py_mp_length, (void *)message_map_container::Length},
+      {Py_mp_subscript, (void *)message_map_container::GetItem},
+      {Py_mp_ass_subscript, (void *)message_map_container::SetItem},
+      {Py_tp_methods, (void *)message_map_container::Methods},
+      {Py_tp_iter, (void *)message_map_container::GetIterator},
+      {0, 0}
+  };
+
+  PyType_Spec MessageMapContainer_Type_spec = {
+      FULL_MODULE_NAME ".MessageMapContainer",
+      sizeof(MessageMapContainer),
+      0,
+      Py_TPFLAGS_DEFAULT,
+      MessageMapContainer_Type_slots
+  };
+
+  PyObject *MessageMapContainer_Type;
+
+#else
+  PyTypeObject MessageMapContainer_Type = {
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    FULL_MODULE_NAME ".MessageMapContainer",  //  tp_name
+    sizeof(MessageMapContainer),         //  tp_basicsize
+    0,                                   //  tp_itemsize
+    message_map_container::Dealloc,      //  tp_dealloc
+    0,                                   //  tp_print
+    0,                                   //  tp_getattr
+    0,                                   //  tp_setattr
+    0,                                   //  tp_compare
+    0,                                   //  tp_repr
+    0,                                   //  tp_as_number
+    0,                                   //  tp_as_sequence
+    &message_map_container::MpMethods,   //  tp_as_mapping
+    0,                                   //  tp_hash
+    0,                                   //  tp_call
+    0,                                   //  tp_str
+    0,                                   //  tp_getattro
+    0,                                   //  tp_setattro
+    0,                                   //  tp_as_buffer
+    Py_TPFLAGS_DEFAULT,                  //  tp_flags
+    "A map container for message",       //  tp_doc
+    0,                                   //  tp_traverse
+    0,                                   //  tp_clear
+    0,                                   //  tp_richcompare
+    0,                                   //  tp_weaklistoffset
+    message_map_container::GetIterator,  //  tp_iter
+    0,                                   //  tp_iternext
+    message_map_container::Methods,      //  tp_methods
+    0,                                   //  tp_members
+    0,                                   //  tp_getset
+    0,                                   //  tp_base
+    0,                                   //  tp_dict
+    0,                                   //  tp_descr_get
+    0,                                   //  tp_descr_set
+    0,                                   //  tp_dictoffset
+    0,                                   //  tp_init
+  };
+#endif
 
 PyTypeObject MessageMapIterator_Type = {
   PyVarObject_HEAD_INIT(&PyType_Type, 0)
diff --git a/python/google/protobuf/pyext/message_map_container.h b/python/google/protobuf/pyext/message_map_container.h
index 4ca0aecc..8286ba8a 100644
--- a/python/google/protobuf/pyext/message_map_container.h
+++ b/python/google/protobuf/pyext/message_map_container.h
@@ -89,7 +89,12 @@ struct MessageMapContainer {
   uint64 version;
 };
 
-extern PyTypeObject MessageMapContainer_Type;
+#if PY_MAJOR_VERSION >= 3
+  extern PyObject *MessageMapContainer_Type;
+  extern PyType_Spec MessageMapContainer_Type_spec;
+#else
+  extern PyTypeObject MessageMapContainer_Type;
+#endif
 extern PyTypeObject MessageMapIterator_Type;
 
 namespace message_map_container {
diff --git a/python/google/protobuf/pyext/scalar_map_container.cc b/python/google/protobuf/pyext/scalar_map_container.cc
index 80d29425..a355edb2 100644
--- a/python/google/protobuf/pyext/scalar_map_container.cc
+++ b/python/google/protobuf/pyext/scalar_map_container.cc
@@ -83,7 +83,12 @@ PyObject *NewContainer(
     return NULL;
   }
 
+#if PY_MAJOR_VERSION >= 3
+  ScopedPyObjectPtr obj(PyType_GenericAlloc(
+        reinterpret_cast<PyTypeObject *>(ScalarMapContainer_Type), 0));
+#else
   ScopedPyObjectPtr obj(PyType_GenericAlloc(&ScalarMapContainer_Type, 0));
+#endif
   if (obj.get() == NULL) {
     return PyErr_Format(PyExc_RuntimeError,
                         "Could not allocate new container.");
@@ -432,44 +437,66 @@ PyObject* IterNext(PyObject* _self) {
 
 }  // namespace scalar_map_iterator
 
-PyTypeObject ScalarMapContainer_Type = {
-  PyVarObject_HEAD_INIT(&PyType_Type, 0)
-  FULL_MODULE_NAME ".ScalarMapContainer",  //  tp_name
-  sizeof(ScalarMapContainer),          //  tp_basicsize
-  0,                                   //  tp_itemsize
-  scalar_map_container::Dealloc,       //  tp_dealloc
-  0,                                   //  tp_print
-  0,                                   //  tp_getattr
-  0,                                   //  tp_setattr
-  0,                                   //  tp_compare
-  0,                                   //  tp_repr
-  0,                                   //  tp_as_number
-  0,                                   //  tp_as_sequence
-  &scalar_map_container::MpMethods,    //  tp_as_mapping
-  0,                                   //  tp_hash
-  0,                                   //  tp_call
-  0,                                   //  tp_str
-  0,                                   //  tp_getattro
-  0,                                   //  tp_setattro
-  0,                                   //  tp_as_buffer
-  Py_TPFLAGS_DEFAULT,                  //  tp_flags
-  "A scalar map container",            //  tp_doc
-  0,                                   //  tp_traverse
-  0,                                   //  tp_clear
-  0,                                   //  tp_richcompare
-  0,                                   //  tp_weaklistoffset
-  scalar_map_container::GetIterator,   //  tp_iter
-  0,                                   //  tp_iternext
-  scalar_map_container::Methods,       //  tp_methods
-  0,                                   //  tp_members
-  0,                                   //  tp_getset
-  0,                                   //  tp_base
-  0,                                   //  tp_dict
-  0,                                   //  tp_descr_get
-  0,                                   //  tp_descr_set
-  0,                                   //  tp_dictoffset
-  0,                                   //  tp_init
-};
+ 
+#if PY_MAJOR_VERSION >= 3
+  static PyType_Slot ScalarMapContainer_Type_slots[] = {
+      {Py_tp_dealloc, (void *)scalar_map_container::Dealloc},
+      {Py_mp_length, (void *)scalar_map_container::Length},
+      {Py_mp_subscript, (void *)scalar_map_container::GetItem},
+      {Py_mp_ass_subscript, (void *)scalar_map_container::SetItem},
+      {Py_tp_methods, (void *)scalar_map_container::Methods},
+      {Py_tp_iter, (void *)scalar_map_container::GetIterator},
+      {0, 0},
+  };
+
+  PyType_Spec ScalarMapContainer_Type_spec = {
+      FULL_MODULE_NAME ".ScalarMapContainer",
+      sizeof(ScalarMapContainer),
+      0,
+      Py_TPFLAGS_DEFAULT,
+      ScalarMapContainer_Type_slots
+  };
+  PyObject *ScalarMapContainer_Type;
+#else
+  PyTypeObject ScalarMapContainer_Type = {
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    FULL_MODULE_NAME ".ScalarMapContainer",  //  tp_name
+    sizeof(ScalarMapContainer),          //  tp_basicsize
+    0,                                   //  tp_itemsize
+    scalar_map_container::Dealloc,       //  tp_dealloc
+    0,                                   //  tp_print
+    0,                                   //  tp_getattr
+    0,                                   //  tp_setattr
+    0,                                   //  tp_compare
+    0,                                   //  tp_repr
+    0,                                   //  tp_as_number
+    0,                                   //  tp_as_sequence
+    &scalar_map_container::MpMethods,    //  tp_as_mapping
+    0,                                   //  tp_hash
+    0,                                   //  tp_call
+    0,                                   //  tp_str
+    0,                                   //  tp_getattro
+    0,                                   //  tp_setattro
+    0,                                   //  tp_as_buffer
+    Py_TPFLAGS_DEFAULT,                  //  tp_flags
+    "A scalar map container",            //  tp_doc
+    0,                                   //  tp_traverse
+    0,                                   //  tp_clear
+    0,                                   //  tp_richcompare
+    0,                                   //  tp_weaklistoffset
+    scalar_map_container::GetIterator,   //  tp_iter
+    0,                                   //  tp_iternext
+    scalar_map_container::Methods,       //  tp_methods
+    0,                                   //  tp_members
+    0,                                   //  tp_getset
+    0,                                   //  tp_base
+    0,                                   //  tp_dict
+    0,                                   //  tp_descr_get
+    0,                                   //  tp_descr_set
+    0,                                   //  tp_dictoffset
+    0,                                   //  tp_init
+  };
+#endif
 
 PyTypeObject ScalarMapIterator_Type = {
   PyVarObject_HEAD_INIT(&PyType_Type, 0)
diff --git a/python/google/protobuf/pyext/scalar_map_container.h b/python/google/protobuf/pyext/scalar_map_container.h
index 254e6e98..aded8d49 100644
--- a/python/google/protobuf/pyext/scalar_map_container.h
+++ b/python/google/protobuf/pyext/scalar_map_container.h
@@ -83,7 +83,12 @@ struct ScalarMapContainer {
   uint64 version;
 };
 
-extern PyTypeObject ScalarMapContainer_Type;
+#if PY_MAJOR_VERSION >= 3
+  extern PyObject *ScalarMapContainer_Type;
+  extern PyType_Spec ScalarMapContainer_Type_spec;
+#else
+  extern PyTypeObject ScalarMapContainer_Type;
+#endif
 extern PyTypeObject ScalarMapIterator_Type;
 
 namespace scalar_map_container {
diff --git a/python/tox.ini b/python/tox.ini
index d0100758..a6352ef4 100644
--- a/python/tox.ini
+++ b/python/tox.ini
@@ -2,8 +2,7 @@
 envlist =
     # cpp implementation on py34 is currently broken due to
     # changes introduced by http://bugs.python.org/issue22079.
-    #py{26,27,33,34}-{cpp,python}
-    py{26,27,33}-{cpp,python}, py34-{python}
+    py{26,27,33,34}-{cpp,python}
 
 [testenv]
 usedevelop=true
diff --git a/ruby/Gemfile.lock b/ruby/Gemfile.lock
index 91e1666f..8599da75 100644
--- a/ruby/Gemfile.lock
+++ b/ruby/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    google-protobuf (3.0.0.alpha.4)
+    google-protobuf (3.0.0.alpha.4.0)
 
 GEM
   remote: https://rubygems.org/
@@ -23,3 +23,6 @@ DEPENDENCIES
   rake-compiler
   rubygems-tasks
   test-unit
+
+BUNDLED WITH
+   1.10.6
diff --git a/ruby/ext/google/protobuf_c/encode_decode.c b/ruby/ext/google/protobuf_c/encode_decode.c
index df4feac2..1c48281f 100644
--- a/ruby/ext/google/protobuf_c/encode_decode.c
+++ b/ruby/ext/google/protobuf_c/encode_decode.c
@@ -35,11 +35,13 @@
 // For more information, see:
 //   https://bugs.ruby-lang.org/issues/11328
 VALUE noleak_rb_str_cat(VALUE rb_str, const char *str, long len) {
+  char *p;
   size_t oldlen = RSTRING_LEN(rb_str);
   rb_str_modify_expand(rb_str, len);
-  char *p = RSTRING_PTR(rb_str);
+  p = RSTRING_PTR(rb_str);
   memcpy(p + oldlen, str, len);
   rb_str_set_len(rb_str, oldlen + len);
+  return rb_str;
 }
 
 // -----------------------------------------------------------------------------
diff --git a/src/Makefile.am b/src/Makefile.am
index caae2933..2985b5d8 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -434,6 +434,8 @@ libprotoc_la_SOURCES =                                         \
   google/protobuf/compiler/objectivec/objectivec_primitive_field.h \
   google/protobuf/compiler/python/python_generator.cc          \
   google/protobuf/compiler/ruby/ruby_generator.cc              \
+  google/protobuf/compiler/csharp/csharp_doc_comment.cc        \
+  google/protobuf/compiler/csharp/csharp_doc_comment.h         \
   google/protobuf/compiler/csharp/csharp_enum.cc               \
   google/protobuf/compiler/csharp/csharp_enum.h                \
   google/protobuf/compiler/csharp/csharp_enum_field.cc         \
diff --git a/src/google/protobuf/arena.cc b/src/google/protobuf/arena.cc
index 74b09655..cd0b21a7 100755
--- a/src/google/protobuf/arena.cc
+++ b/src/google/protobuf/arena.cc
@@ -61,6 +61,9 @@ void Arena::Init() {
   cleanup_list_ = 0;
 
   if (options_.initial_block != NULL && options_.initial_block_size > 0) {
+    GOOGLE_CHECK_GE(options_.initial_block_size, sizeof(Block))
+        << ": Initial block size too small for header.";
+
     // Add first unowned block to list.
     Block* first_block = reinterpret_cast<Block*>(options_.initial_block);
     first_block->size = options_.initial_block_size;
diff --git a/src/google/protobuf/compiler/cpp/cpp_file.cc b/src/google/protobuf/compiler/cpp/cpp_file.cc
index 5dae4cdd..8e8bd8b7 100644
--- a/src/google/protobuf/compiler/cpp/cpp_file.cc
+++ b/src/google/protobuf/compiler/cpp/cpp_file.cc
@@ -598,8 +598,13 @@ void FileGenerator::GenerateBuildDescriptors(io::Printer* printer) {
     // bytes in length". Declare a static array of characters rather than use a
     // string literal.
     if (breakdown_large_file && file_data.size() > 65535) {
+      // This has to be explicitly marked as a signed char because the generated
+      // code puts negative values in the array, and sometimes plain char is
+      // unsigned. That implicit narrowing conversion is not allowed in C++11.
+      // <http://stackoverflow.com/questions/4434140/narrowing-conversions-in-c0x-is-it-just-me-or-does-this-sound-like-a-breakin>
+      // has details on why.
       printer->Print(
-          "static const char descriptor[] = {\n");
+          "static const signed char descriptor[] = {\n");
       printer->Indent();
 
       // Only write 25 bytes per line.
diff --git a/src/google/protobuf/compiler/csharp/csharp_doc_comment.cc b/src/google/protobuf/compiler/csharp/csharp_doc_comment.cc
new file mode 100644
index 00000000..9ad2cbb5
--- /dev/null
+++ b/src/google/protobuf/compiler/csharp/csharp_doc_comment.cc
@@ -0,0 +1,98 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Author: kenton@google.com (Kenton Varda)
+//  Based on original Protocol Buffers design by
+//  Sanjay Ghemawat, Jeff Dean, and others.
+#include <google/protobuf/compiler/csharp/csharp_doc_comment.h>
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/io/printer.h>
+#include <google/protobuf/stubs/strutil.h>
+
+namespace google {
+namespace protobuf {
+namespace compiler {
+namespace csharp {
+
+// Functions to create C# XML documentation comments.
+// Currently this only includes documentation comments containing text specified as comments
+// in the .proto file; documentation comments generated just from field/message/enum/proto names
+// is inlined in the relevant code. If more control is required, that code can be moved here.
+
+void WriteDocCommentBodyImpl(io::Printer* printer, SourceLocation location) {
+    string comments = location.leading_comments.empty() ?
+        location.trailing_comments : location.leading_comments;
+    if (comments.empty()) {
+        return;
+    }
+    // XML escaping... no need for apostrophes etc as the whole text is going to be a child
+    // node of a summary element, not part of an attribute.
+    comments = StringReplace(comments, "&", "&amp;", true);
+    comments = StringReplace(comments, "<", "&lt;", true);
+    vector<string> lines = Split(comments, "\n");
+    printer->Print("/// <summary>\n");
+    for (std::vector<string>::iterator it = lines.begin(); it != lines.end(); ++it) {
+        printer->Print("/// $line$\n", "line", *it);
+    }
+    printer->Print("/// </summary>\n");
+}
+
+template <typename DescriptorType>
+static void WriteDocCommentBody(
+    io::Printer* printer, const DescriptorType* descriptor) {
+    SourceLocation location;
+    if (descriptor->GetSourceLocation(&location)) {
+        WriteDocCommentBodyImpl(printer, location);
+    }
+}
+
+void WriteMessageDocComment(io::Printer* printer, const Descriptor* message) {
+    WriteDocCommentBody(printer, message);
+}
+
+void WritePropertyDocComment(io::Printer* printer, const FieldDescriptor* field) {
+    WriteDocCommentBody(printer, field);
+}
+
+void WriteEnumDocComment(io::Printer* printer, const EnumDescriptor* enumDescriptor) {
+    WriteDocCommentBody(printer, enumDescriptor);
+}
+void WriteEnumValueDocComment(io::Printer* printer, const EnumValueDescriptor* value) {
+    WriteDocCommentBody(printer, value);
+}
+
+void WriteMethodDocComment(io::Printer* printer, const MethodDescriptor* method) {
+    WriteDocCommentBody(printer, method);
+}
+
+}  // namespace csharp
+}  // namespace compiler
+}  // namespace protobuf
+}  // namespace google
diff --git a/src/google/protobuf/compiler/csharp/csharp_doc_comment.h b/src/google/protobuf/compiler/csharp/csharp_doc_comment.h
new file mode 100644
index 00000000..75eb0ea0
--- /dev/null
+++ b/src/google/protobuf/compiler/csharp/csharp_doc_comment.h
@@ -0,0 +1,51 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#ifndef GOOGLE_PROTOBUF_COMPILER_CSHARP_DOC_COMMENT_H__
+#define GOOGLE_PROTOBUF_COMPILER_CSHARP_DOC_COMMENT_H__
+
+#include <google/protobuf/io/printer.h>
+#include <google/protobuf/descriptor.h>
+
+namespace google {
+namespace protobuf {
+namespace compiler {
+namespace csharp {
+    void WriteMessageDocComment(io::Printer* printer, const Descriptor* message);
+    void WritePropertyDocComment(io::Printer* printer, const FieldDescriptor* field);
+    void WriteEnumDocComment(io::Printer* printer, const EnumDescriptor* enumDescriptor);
+    void WriteEnumValueDocComment(io::Printer* printer, const EnumValueDescriptor* value);
+    void WriteMethodDocComment(io::Printer* printer, const MethodDescriptor* method);
+}  // namespace csharp
+}  // namespace compiler
+}  // namespace protobuf
+}  // namespace google
+#endif  // GOOGLE_PROTOBUF_COMPILER_CSHARP_DOC_COMMENT_H__
diff --git a/src/google/protobuf/compiler/csharp/csharp_enum.cc b/src/google/protobuf/compiler/csharp/csharp_enum.cc
index 0e8f9836..56681989 100644
--- a/src/google/protobuf/compiler/csharp/csharp_enum.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_enum.cc
@@ -38,6 +38,7 @@
 #include <google/protobuf/io/zero_copy_stream.h>
 #include <google/protobuf/stubs/strutil.h>
 
+#include <google/protobuf/compiler/csharp/csharp_doc_comment.h>
 #include <google/protobuf/compiler/csharp/csharp_enum.h>
 #include <google/protobuf/compiler/csharp/csharp_helpers.h>
 
@@ -57,13 +58,15 @@ EnumGenerator::~EnumGenerator() {
 }
 
 void EnumGenerator::Generate(io::Printer* printer) {
+  WriteEnumDocComment(printer, descriptor_);
   WriteGeneratedCodeAttributes(printer);
   printer->Print("$access_level$ enum $name$ {\n",
                  "access_level", class_access_level(),
                  "name", descriptor_->name());
   printer->Indent();
   for (int i = 0; i < descriptor_->value_count(); i++) {
-    printer->Print("$name$ = $number$,\n",
+      WriteEnumValueDocComment(printer, descriptor_->value(i));
+      printer->Print("$name$ = $number$,\n",
                    "name", descriptor_->value(i)->name(),
                    "number", SimpleItoa(descriptor_->value(i)->number()));
   }
diff --git a/src/google/protobuf/compiler/csharp/csharp_generator.cc b/src/google/protobuf/compiler/csharp/csharp_generator.cc
index e0a6c83a..95ff48ae 100644
--- a/src/google/protobuf/compiler/csharp/csharp_generator.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_generator.cc
@@ -36,10 +36,12 @@
 #include <google/protobuf/descriptor.pb.h>
 #include <google/protobuf/io/printer.h>
 #include <google/protobuf/io/zero_copy_stream.h>
+#include <google/protobuf/stubs/strutil.h>
 
 #include <google/protobuf/compiler/csharp/csharp_generator.h>
-#include <google/protobuf/compiler/csharp/csharp_umbrella_class.h>
 #include <google/protobuf/compiler/csharp/csharp_helpers.h>
+#include <google/protobuf/compiler/csharp/csharp_names.h>
+#include <google/protobuf/compiler/csharp/csharp_umbrella_class.h>
 
 using google::protobuf::internal::scoped_ptr;
 
@@ -48,9 +50,39 @@ namespace protobuf {
 namespace compiler {
 namespace csharp {
 
-std::string GetOutputFile(const google::protobuf::FileDescriptor* file, const std::string file_extension)
-{
-  return GetUmbrellaClassUnqualifiedName(file) + file_extension;
+std::string GetOutputFile(
+    const google::protobuf::FileDescriptor* file,
+    const std::string file_extension,
+    const bool generate_directories,
+    const std::string base_namespace,
+    string* error) {
+  string relative_filename = GetUmbrellaClassUnqualifiedName(file) + file_extension;
+  if (!generate_directories) {
+    return relative_filename;
+  }
+  string ns = GetFileNamespace(file);
+  string namespace_suffix = ns;
+  if (!base_namespace.empty()) {
+    // Check that the base_namespace is either equal to or a leading part of
+    // the file namespace. This isn't just a simple prefix; "Foo.B" shouldn't
+    // be regarded as a prefix of "Foo.Bar". The simplest option is to add "."
+    // to both.
+    string extended_ns = ns + ".";
+    if (extended_ns.find(base_namespace + ".") != 0) {
+      *error = "Namespace " + ns + " is not a prefix namespace of base namespace " + base_namespace;
+      return ""; // This will be ignored, because we've set an error.
+    }
+    namespace_suffix = ns.substr(base_namespace.length());
+    if (namespace_suffix.find(".") == 0) {
+      namespace_suffix = namespace_suffix.substr(1);
+    }
+  }
+
+  string namespace_dir = StringReplace(namespace_suffix, ".", "/", true);
+  if (!namespace_dir.empty()) {
+    namespace_dir += "/";
+  }
+  return namespace_dir + relative_filename;
 }
 
 void GenerateFile(const google::protobuf::FileDescriptor* file,
@@ -75,16 +107,26 @@ bool Generator::Generate(
   }
 
   std::string file_extension = ".cs";
+  std::string base_namespace = "";
+  bool generate_directories = false;
   for (int i = 0; i < options.size(); i++) {
     if (options[i].first == "file_extension") {
       file_extension = options[i].second;
+    } else if (options[i].first == "base_namespace") {
+      base_namespace = options[i].second;
+      generate_directories = true;
     } else {
       *error = "Unknown generator option: " + options[i].first;
       return false;
     }
   }
 
-  std::string filename = GetOutputFile(file, file_extension);
+  string filename_error = "";
+  std::string filename = GetOutputFile(file, file_extension, generate_directories, base_namespace, &filename_error);
+  if (!filename_error.empty()) {
+    *error = filename_error;
+    return false;
+  }
   scoped_ptr<io::ZeroCopyOutputStream> output(
       generator_context->Open(filename));
   io::Printer printer(output.get(), '$');
diff --git a/src/google/protobuf/compiler/csharp/csharp_helpers.h b/src/google/protobuf/compiler/csharp/csharp_helpers.h
index 4ed17a84..e293faca 100644
--- a/src/google/protobuf/compiler/csharp/csharp_helpers.h
+++ b/src/google/protobuf/compiler/csharp/csharp_helpers.h
@@ -101,8 +101,6 @@ std::string StringToBase64(const std::string& input);
 
 std::string FileDescriptorToBase64(const FileDescriptor* descriptor);
 
-uint FixedMakeTag(const FieldDescriptor* descriptor);
-
 FieldGeneratorBase* CreateFieldGenerator(const FieldDescriptor* descriptor, int fieldOrdinal);
 
 // Determines whether the given message is a map entry message, i.e. one implicitly created
diff --git a/src/google/protobuf/compiler/csharp/csharp_map_field.cc b/src/google/protobuf/compiler/csharp/csharp_map_field.cc
index f84ad6f7..b493495d 100644
--- a/src/google/protobuf/compiler/csharp/csharp_map_field.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_map_field.cc
@@ -38,6 +38,7 @@
 #include <google/protobuf/io/zero_copy_stream.h>
 #include <google/protobuf/stubs/strutil.h>
 
+#include <google/protobuf/compiler/csharp/csharp_doc_comment.h>
 #include <google/protobuf/compiler/csharp/csharp_helpers.h>
 #include <google/protobuf/compiler/csharp/csharp_map_field.h>
 
@@ -76,6 +77,7 @@ void MapFieldGenerator::GenerateMembers(io::Printer* printer) {
     variables_,
     ", $tag$);\n"
     "private readonly pbc::MapField<$key_type_name$, $value_type_name$> $name$_ = new pbc::MapField<$key_type_name$, $value_type_name$>($true_for_wrappers$);\n");
+  WritePropertyDocComment(printer, descriptor_);
   AddDeprecatedFlag(printer);
   printer->Print(
     variables_,
diff --git a/src/google/protobuf/compiler/csharp/csharp_message.cc b/src/google/protobuf/compiler/csharp/csharp_message.cc
index a71a7909..21fbf7e3 100644
--- a/src/google/protobuf/compiler/csharp/csharp_message.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_message.cc
@@ -42,6 +42,7 @@
 #include <google/protobuf/wire_format.h>
 #include <google/protobuf/wire_format_lite.h>
 
+#include <google/protobuf/compiler/csharp/csharp_doc_comment.h>
 #include <google/protobuf/compiler/csharp/csharp_enum.h>
 #include <google/protobuf/compiler/csharp/csharp_field_base.h>
 #include <google/protobuf/compiler/csharp/csharp_helpers.h>
@@ -101,6 +102,7 @@ void MessageGenerator::Generate(io::Printer* printer) {
   vars["class_name"] = class_name();
   vars["access_level"] = class_access_level();
 
+  WriteMessageDocComment(printer, descriptor_);
   printer->Print(
     "[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]\n");
   WriteGeneratedCodeAttributes(printer);
@@ -152,7 +154,9 @@ void MessageGenerator::Generate(io::Printer* printer) {
 
     // Rats: we lose the debug comment here :(
     printer->Print(
+      "/// <summary>Field number for the \"$field_name$\" field.</summary>\n"
       "public const int $field_constant_name$ = $index$;\n",
+      "field_name", fieldDescriptor->name(),
       "field_constant_name", GetFieldConstantName(fieldDescriptor),
       "index", SimpleItoa(fieldDescriptor->number()));
     scoped_ptr<FieldGeneratorBase> generator(
@@ -169,6 +173,7 @@ void MessageGenerator::Generate(io::Printer* printer) {
     printer->Print(
       vars,
       "private object $name$_;\n"
+      "/// <summary>Enum of possible cases for the \"$original_name$\" oneof.</summary>\n"
       "public enum $property_name$OneofCase {\n");
     printer->Indent();
     printer->Print("None = 0,\n");
@@ -180,6 +185,7 @@ void MessageGenerator::Generate(io::Printer* printer) {
     }
     printer->Outdent();
     printer->Print("}\n");
+    // TODO: Should we put the oneof .proto comments here? It's unclear exactly where they should go.
     printer->Print(
       vars,
       "private $property_name$OneofCase $name$Case_ = $property_name$OneofCase.None;\n"
@@ -199,8 +205,11 @@ void MessageGenerator::Generate(io::Printer* printer) {
 
   // Nested messages and enums
   if (HasNestedGeneratedTypes()) {
-    printer->Print("#region Nested types\n"
-		   "[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]\n");
+    printer->Print(
+      vars,
+      "#region Nested types\n"
+      "/// <summary>Container for nested types declared in the $class_name$ message type.</summary>\n"
+      "[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]\n");
     WriteGeneratedCodeAttributes(printer);
     printer->Print("public static partial class Types {\n");
     printer->Indent();
diff --git a/src/google/protobuf/compiler/csharp/csharp_message_field.cc b/src/google/protobuf/compiler/csharp/csharp_message_field.cc
index 4f576cd1..f81f769b 100644
--- a/src/google/protobuf/compiler/csharp/csharp_message_field.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_message_field.cc
@@ -38,6 +38,7 @@
 #include <google/protobuf/io/zero_copy_stream.h>
 #include <google/protobuf/stubs/strutil.h>
 
+#include <google/protobuf/compiler/csharp/csharp_doc_comment.h>
 #include <google/protobuf/compiler/csharp/csharp_helpers.h>
 #include <google/protobuf/compiler/csharp/csharp_message_field.h>
 
@@ -61,6 +62,7 @@ void MessageFieldGenerator::GenerateMembers(io::Printer* printer) {
   printer->Print(
     variables_,
     "private $type_name$ $name$_;\n");
+  WritePropertyDocComment(printer, descriptor_);
   AddDeprecatedFlag(printer);
   printer->Print(
     variables_,
@@ -152,6 +154,7 @@ MessageOneofFieldGenerator::~MessageOneofFieldGenerator() {
 }
 
 void MessageOneofFieldGenerator::GenerateMembers(io::Printer* printer) {
+  WritePropertyDocComment(printer, descriptor_);
   AddDeprecatedFlag(printer);
   printer->Print(
     variables_,
diff --git a/src/google/protobuf/compiler/csharp/csharp_primitive_field.cc b/src/google/protobuf/compiler/csharp/csharp_primitive_field.cc
index fc043ec0..76d5b247 100644
--- a/src/google/protobuf/compiler/csharp/csharp_primitive_field.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_primitive_field.cc
@@ -38,6 +38,7 @@
 #include <google/protobuf/io/zero_copy_stream.h>
 #include <google/protobuf/stubs/strutil.h>
 
+#include <google/protobuf/compiler/csharp/csharp_doc_comment.h>
 #include <google/protobuf/compiler/csharp/csharp_helpers.h>
 #include <google/protobuf/compiler/csharp/csharp_primitive_field.h>
 
@@ -68,6 +69,7 @@ void PrimitiveFieldGenerator::GenerateMembers(io::Printer* printer) {
   printer->Print(
     variables_,
     "private $type_name$ $name_def_message$;\n");
+  WritePropertyDocComment(printer, descriptor_);
   AddDeprecatedFlag(printer);
   printer->Print(
     variables_,
@@ -170,6 +172,7 @@ PrimitiveOneofFieldGenerator::~PrimitiveOneofFieldGenerator() {
 }
 
 void PrimitiveOneofFieldGenerator::GenerateMembers(io::Printer* printer) {
+  WritePropertyDocComment(printer, descriptor_);
   AddDeprecatedFlag(printer);
   printer->Print(
     variables_,
diff --git a/src/google/protobuf/compiler/csharp/csharp_repeated_enum_field.cc b/src/google/protobuf/compiler/csharp/csharp_repeated_enum_field.cc
index 625631df..3a11b75d 100644
--- a/src/google/protobuf/compiler/csharp/csharp_repeated_enum_field.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_repeated_enum_field.cc
@@ -38,6 +38,7 @@
 #include <google/protobuf/io/zero_copy_stream.h>
 #include <google/protobuf/wire_format.h>
 
+#include <google/protobuf/compiler/csharp/csharp_doc_comment.h>
 #include <google/protobuf/compiler/csharp/csharp_helpers.h>
 #include <google/protobuf/compiler/csharp/csharp_repeated_enum_field.h>
 
@@ -62,6 +63,7 @@ void RepeatedEnumFieldGenerator::GenerateMembers(io::Printer* printer) {
     "    = pb::FieldCodec.ForEnum($tag$, x => (int) x, x => ($type_name$) x);\n");
   printer->Print(variables_,
     "private readonly pbc::RepeatedField<$type_name$> $name$_ = new pbc::RepeatedField<$type_name$>();\n");
+  WritePropertyDocComment(printer, descriptor_);
   AddDeprecatedFlag(printer);
   printer->Print(
     variables_,
diff --git a/src/google/protobuf/compiler/csharp/csharp_repeated_message_field.cc b/src/google/protobuf/compiler/csharp/csharp_repeated_message_field.cc
index 7fbab681..fc12faed 100644
--- a/src/google/protobuf/compiler/csharp/csharp_repeated_message_field.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_repeated_message_field.cc
@@ -37,6 +37,7 @@
 #include <google/protobuf/io/printer.h>
 #include <google/protobuf/io/zero_copy_stream.h>
 
+#include <google/protobuf/compiler/csharp/csharp_doc_comment.h>
 #include <google/protobuf/compiler/csharp/csharp_helpers.h>
 #include <google/protobuf/compiler/csharp/csharp_repeated_message_field.h>
 #include <google/protobuf/compiler/csharp/csharp_message_field.h>
@@ -75,6 +76,7 @@ void RepeatedMessageFieldGenerator::GenerateMembers(io::Printer* printer) {
   printer->Print(
     variables_,
     "private readonly pbc::RepeatedField<$type_name$> $name$_ = new pbc::RepeatedField<$type_name$>();\n");
+  WritePropertyDocComment(printer, descriptor_);
   AddDeprecatedFlag(printer);
   printer->Print(
     variables_,
diff --git a/src/google/protobuf/compiler/csharp/csharp_repeated_primitive_field.cc b/src/google/protobuf/compiler/csharp/csharp_repeated_primitive_field.cc
index 1163ce73..5fe0b203 100644
--- a/src/google/protobuf/compiler/csharp/csharp_repeated_primitive_field.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_repeated_primitive_field.cc
@@ -38,6 +38,7 @@
 #include <google/protobuf/io/zero_copy_stream.h>
 #include <google/protobuf/wire_format.h>
 
+#include <google/protobuf/compiler/csharp/csharp_doc_comment.h>
 #include <google/protobuf/compiler/csharp/csharp_helpers.h>
 #include <google/protobuf/compiler/csharp/csharp_repeated_primitive_field.h>
 
@@ -62,6 +63,7 @@ void RepeatedPrimitiveFieldGenerator::GenerateMembers(io::Printer* printer) {
     "    = pb::FieldCodec.For$capitalized_type_name$($tag$);\n");
   printer->Print(variables_,
     "private readonly pbc::RepeatedField<$type_name$> $name$_ = new pbc::RepeatedField<$type_name$>();\n");
+  WritePropertyDocComment(printer, descriptor_);
   AddDeprecatedFlag(printer);
   printer->Print(
     variables_,
diff --git a/src/google/protobuf/compiler/csharp/csharp_umbrella_class.cc b/src/google/protobuf/compiler/csharp/csharp_umbrella_class.cc
index 399c64e1..7cf101b0 100644
--- a/src/google/protobuf/compiler/csharp/csharp_umbrella_class.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_umbrella_class.cc
@@ -135,7 +135,9 @@ void UmbrellaClassGenerator::WriteIntroduction(io::Printer* printer) {
   }
 
   printer->Print(
-    "[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]\n");
+    "/// <summary>Holder for reflection information generated from $file_name$</summary>\n"
+    "[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]\n",
+    "file_name", file_->name());
   WriteGeneratedCodeAttributes(printer);
   printer->Print(
     "$access_level$ static partial class $umbrella_class_name$ {\n"
@@ -148,12 +150,14 @@ void UmbrellaClassGenerator::WriteIntroduction(io::Printer* printer) {
 void UmbrellaClassGenerator::WriteDescriptor(io::Printer* printer) {
   printer->Print(
     "#region Descriptor\n"
+    "/// <summary>File descriptor for $file_name$</summary>\n"
     "public static pbr::FileDescriptor Descriptor {\n"
     "  get { return descriptor; }\n"
     "}\n"
     "private static pbr::FileDescriptor descriptor;\n"
     "\n"
     "static $umbrella_class_name$() {\n",
+    "file_name", file_->name(),
     "umbrella_class_name", umbrellaClassname_);
   printer->Indent();
   printer->Print(
@@ -166,7 +170,7 @@ void UmbrellaClassGenerator::WriteDescriptor(io::Printer* printer) {
   // TODO(jonskeet): Consider a C#-escaping format here instead of just Base64.
   std::string base64 = FileDescriptorToBase64(file_);
   while (base64.size() > 60) {
-    printer->Print("\"$base64$\", \n", "base64", base64.substr(0, 60));
+    printer->Print("\"$base64$\",\n", "base64", base64.substr(0, 60));
     base64 = base64.substr(60);
   }
   printer->Print("\"$base64$\"));\n", "base64", base64);
diff --git a/src/google/protobuf/compiler/csharp/csharp_wrapper_field.cc b/src/google/protobuf/compiler/csharp/csharp_wrapper_field.cc
index 44f832bf..6a3750e0 100644
--- a/src/google/protobuf/compiler/csharp/csharp_wrapper_field.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_wrapper_field.cc
@@ -37,6 +37,7 @@
 #include <google/protobuf/io/printer.h>
 #include <google/protobuf/io/zero_copy_stream.h>
 
+#include <google/protobuf/compiler/csharp/csharp_doc_comment.h>
 #include <google/protobuf/compiler/csharp/csharp_helpers.h>
 #include <google/protobuf/compiler/csharp/csharp_wrapper_field.h>
 
@@ -70,6 +71,7 @@ void WrapperFieldGenerator::GenerateMembers(io::Printer* printer) {
     variables_,
     ";\n"
     "private $type_name$ $name$_;\n");
+  WritePropertyDocComment(printer, descriptor_);
   AddDeprecatedFlag(printer);
   printer->Print(
     variables_,
@@ -165,6 +167,7 @@ void WrapperOneofFieldGenerator::GenerateMembers(io::Printer* printer) {
         "private static readonly pb::FieldCodec<$type_name$> _oneof_$name$_codec = ");
   GenerateCodecCode(printer);
   printer->Print(";\n");
+  WritePropertyDocComment(printer, descriptor_);
   AddDeprecatedFlag(printer);
   printer->Print(
     variables_,
diff --git a/src/google/protobuf/compiler/main.cc b/src/google/protobuf/compiler/main.cc
index 4815a726..584e5a40 100644
--- a/src/google/protobuf/compiler/main.cc
+++ b/src/google/protobuf/compiler/main.cc
@@ -72,7 +72,7 @@ int main(int argc, char* argv[]) {
 
   // CSharp
   google::protobuf::compiler::csharp::Generator csharp_generator;
-  cli.RegisterGenerator("--csharp_out", &csharp_generator,
+  cli.RegisterGenerator("--csharp_out", "--csharp_opt", &csharp_generator,
                         "Generate C# source file.");
 
   // Objective C
diff --git a/src/google/protobuf/descriptor.pb.cc b/src/google/protobuf/descriptor.pb.cc
index 921d2cd0..9c817122 100644
--- a/src/google/protobuf/descriptor.pb.cc
+++ b/src/google/protobuf/descriptor.pb.cc
@@ -757,8 +757,9 @@ void protobuf_AddDesc_google_2fprotobuf_2fdescriptor_2eproto() {
     "path\030\001 \003(\005B\002\020\001\022\020\n\004span\030\002 \003(\005B\002\020\001\022\030\n\020lead"
     "ing_comments\030\003 \001(\t\022\031\n\021trailing_comments\030"
     "\004 \001(\t\022!\n\031leading_detached_comments\030\006 \003(\t"
-    "B;\n\023com.google.protobufB\020DescriptorProto"
-    "sH\001Z\ndescriptor\242\002\003GPB", 4981);
+    "BX\n\023com.google.protobufB\020DescriptorProto"
+    "sH\001Z\ndescriptor\242\002\003GPB\252\002\032Google.Protobuf."
+    "Reflection", 5010);
   ::google::protobuf::MessageFactory::InternalRegisterGeneratedFile(
     "google/protobuf/descriptor.proto", &protobuf_RegisterTypes);
   FileDescriptorSet::default_instance_ = new FileDescriptorSet();
diff --git a/src/google/protobuf/descriptor.proto b/src/google/protobuf/descriptor.proto
index 801d85e4..c59a6022 100644
--- a/src/google/protobuf/descriptor.proto
+++ b/src/google/protobuf/descriptor.proto
@@ -43,8 +43,7 @@ package google.protobuf;
 option go_package = "descriptor";
 option java_package = "com.google.protobuf";
 option java_outer_classname = "DescriptorProtos";
-// Re-enable this once the tools have picked up the csharp_namespace option.
-// option csharp_namespace = "Google.ProtocolBuffers.DescriptorProtos";
+option csharp_namespace = "Google.Protobuf.Reflection";
 option objc_class_prefix = "GPB";
 
 // descriptor.proto must be optimized for speed because reflection-based
diff --git a/src/google/protobuf/map_type_handler.h b/src/google/protobuf/map_type_handler.h
index 5040e605..f8ad7584 100644
--- a/src/google/protobuf/map_type_handler.h
+++ b/src/google/protobuf/map_type_handler.h
@@ -272,24 +272,24 @@ MapTypeHandler<WireFormatLite::TYPE_MESSAGE, Type>::ByteSize(
   return WireFormatLite::MessageSizeNoVirtual(value);
 }
 
-#define BYTE_SIZE(FieldType, DeclaredType)                                     \
+#define GOOGLE_PROTOBUF_BYTE_SIZE(FieldType, DeclaredType)                     \
   template <typename Type>                                                     \
   inline int MapTypeHandler<WireFormatLite::TYPE_##FieldType, Type>::ByteSize( \
       const MapEntryAccessorType& value) {                                     \
     return WireFormatLite::DeclaredType##Size(value);                          \
   }
 
-BYTE_SIZE(STRING, String)
-BYTE_SIZE(BYTES , Bytes)
-BYTE_SIZE(INT64 , Int64)
-BYTE_SIZE(UINT64, UInt64)
-BYTE_SIZE(INT32 , Int32)
-BYTE_SIZE(UINT32, UInt32)
-BYTE_SIZE(SINT64, SInt64)
-BYTE_SIZE(SINT32, SInt32)
-BYTE_SIZE(ENUM  , Enum)
-
-#undef BYTE_SIZE
+GOOGLE_PROTOBUF_BYTE_SIZE(STRING, String)
+GOOGLE_PROTOBUF_BYTE_SIZE(BYTES , Bytes)
+GOOGLE_PROTOBUF_BYTE_SIZE(INT64 , Int64)
+GOOGLE_PROTOBUF_BYTE_SIZE(UINT64, UInt64)
+GOOGLE_PROTOBUF_BYTE_SIZE(INT32 , Int32)
+GOOGLE_PROTOBUF_BYTE_SIZE(UINT32, UInt32)
+GOOGLE_PROTOBUF_BYTE_SIZE(SINT64, SInt64)
+GOOGLE_PROTOBUF_BYTE_SIZE(SINT32, SInt32)
+GOOGLE_PROTOBUF_BYTE_SIZE(ENUM  , Enum)
+
+#undef GOOGLE_PROTOBUF_BYTE_SIZE
 
 #define FIXED_BYTE_SIZE(FieldType, DeclaredType)                               \
   template <typename Type>                                                     \
diff --git a/src/google/protobuf/message.cc b/src/google/protobuf/message.cc
index d9c200c6..032748bd 100644
--- a/src/google/protobuf/message.cc
+++ b/src/google/protobuf/message.cc
@@ -494,11 +494,19 @@ Message* GenericTypeHandler<Message>::NewFromPrototype(
   return prototype->New(arena);
 }
 template<>
+#if defined(_MSC_VER) && (_MSC_VER >= 1900)
+// Note: force noinline to workaround MSVC 2015 compiler bug, issue #240
+GOOGLE_ATTRIBUTE_NOINLINE
+#endif
 google::protobuf::Arena* GenericTypeHandler<Message>::GetArena(
     Message* value) {
   return value->GetArena();
 }
 template<>
+#if defined(_MSC_VER) && (_MSC_VER >= 1900)
+// Note: force noinline to workaround MSVC 2015 compiler bug, issue #240
+GOOGLE_ATTRIBUTE_NOINLINE
+#endif
 void* GenericTypeHandler<Message>::GetMaybeArenaPointer(
     Message* value) {
   return value->GetMaybeArenaPointer();
diff --git a/src/google/protobuf/metadata.h b/src/google/protobuf/metadata.h
index fdee150b..219645d3 100644
--- a/src/google/protobuf/metadata.h
+++ b/src/google/protobuf/metadata.h
@@ -56,7 +56,7 @@ namespace internal {
 // The tagged pointer uses the LSB to disambiguate cases, and uses bit 0 == 0 to
 // indicate an arena pointer and bit 0 == 1 to indicate a UFS+Arena-container
 // pointer.
-class LIBPROTOBUF_EXPORT InternalMetadataWithArena {
+class InternalMetadataWithArena {
  public:
   InternalMetadataWithArena() : ptr_(NULL) {}
   explicit InternalMetadataWithArena(Arena* arena)
diff --git a/src/google/protobuf/stubs/hash.h b/src/google/protobuf/stubs/hash.h
index c6f210f0..e7b3771f 100755
--- a/src/google/protobuf/stubs/hash.h
+++ b/src/google/protobuf/stubs/hash.h
@@ -41,10 +41,10 @@
 #define GOOGLE_PROTOBUF_HAVE_HASH_MAP 1
 #define GOOGLE_PROTOBUF_HAVE_HASH_SET 1
 
-// Use C++11 unordered_{map|set} if available. Otherwise, libc++ always support
-// unordered_{map|set}
-#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X) || \
-    defined(_LIBCPP_VERSION)
+// Use C++11 unordered_{map|set} if available.
+#if ((_LIBCPP_STD_VER >= 11) || \
+     (((__cplusplus >= 201103L) || defined(__GXX_EXPERIMENTAL_CXX0X)) && \
+      (__GLIBCXX__ > 20090421)))
 # define GOOGLE_PROTOBUF_HAS_CXX11_HASH
 
 // For XCode >= 4.6:  the compiler is clang with libc++.
diff --git a/src/google/protobuf/testing/googletest.cc b/src/google/protobuf/testing/googletest.cc
index b8bd790b..2b9cddef 100644
--- a/src/google/protobuf/testing/googletest.cc
+++ b/src/google/protobuf/testing/googletest.cc
@@ -94,6 +94,13 @@ string TestSourceDir() {
 namespace {
 
 string GetTemporaryDirectoryName() {
+  // Tests run under Bazel "should not" use /tmp. Bazel sets this environment
+  // variable for tests to use instead.
+  char *from_environment = getenv("TEST_TMPDIR");
+  if (from_environment != NULL && from_environment[0] != '\0') {
+    return string(from_environment) + "/protobuf_tmpdir";
+  }
+
   // tmpnam() is generally not considered safe but we're only using it for
   // testing.  We cannot use tmpfile() or mkstemp() since we're creating a
   // directory.
diff --git a/travis.sh b/travis.sh
index a5208fe3..b4a908dd 100755
--- a/travis.sh
+++ b/travis.sh
@@ -113,12 +113,14 @@ build_javanano_oracle7() {
 
 internal_install_python_deps() {
   sudo pip install tox
-  # Only install Python2.6 on Linux.
+  # Only install Python2.6/3.x on Linux.
   if [ $(uname -s) == "Linux" ]; then
     sudo apt-get install -y python-software-properties # for apt-add-repository
     sudo apt-add-repository -y ppa:fkrull/deadsnakes
     sudo apt-get update -qq
     sudo apt-get install -y python2.6 python2.6-dev
+    sudo apt-get install -y python3.3 python3.3-dev
+    sudo apt-get install -y python3.4 python3.4-dev
   fi
 }
 
@@ -127,9 +129,9 @@ build_python() {
   internal_build_cpp
   internal_install_python_deps
   cd python
-  # Only test Python 2.6 on Linux
+  # Only test Python 2.6/3.x on Linux
   if [ $(uname -s) == "Linux" ]; then
-    envlist=py26-python,py27-python
+    envlist=py\{26,27,33,34\}-python
   else
     envlist=py27-python
   fi
@@ -143,9 +145,9 @@ build_python_cpp() {
   export LD_LIBRARY_PATH=../src/.libs # for Linux
   export DYLD_LIBRARY_PATH=../src/.libs # for OS X
   cd python
-  # Only test Python 2.6 on Linux
+  # Only test Python 2.6/3.x on Linux
   if [ $(uname -s) == "Linux" ]; then
-    envlist=py26-cpp,py27-cpp
+    envlist=py\{26,27,33,34\}-cpp
   else
     envlist=py27-cpp
   fi
author	Jisi Liu <jisi.liu@gmail.com>	2015-10-05 13:54:05 -0700
committer	Jisi Liu <jisi.liu@gmail.com>	2015-10-05 13:54:05 -0700
commit	8d8177c75701014dfe27fec4cdd2b1647aefcb67 (patch)
tree	fdc5d0d0f2fd57f2ca641069c20b34ddf90ec919
parent	46e8ff63cb67a6520711da5317aaaef04d0414d0 (diff)
parent	cccf6fed7e2fad1240bb48ba0c47f3978ff7433d (diff)