Adjust serializer test to verify via libprotobuf. (#1039)

Previously, the tests would compare serialization results against a
precomputed (via protoc) array of bytes. Now they serialize via our
nanopb based class and deserialize via libprotobuf (and vice versa) and
then ensure the result is the same as the input

1 files changed, 1803 insertions, 0 deletions

diff --git a/Firestore/Protos/cpp/google/firestore/v1beta1/common.pb.cc b/Firestore/Protos/cpp/google/firestore/v1beta1/common.pb.cc
new file mode 100644
index 0000000..57237a1
--- /dev/null
+++ b/Firestore/Protos/cpp/google/firestore/v1beta1/common.pb.cc
@@ -0,0 +1,1803 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/firestore/v1beta1/common.proto
+
+#include "google/firestore/v1beta1/common.pb.h"
+
+#include <algorithm>
+
+#include <google/protobuf/stubs/common.h>
+#include <google/protobuf/stubs/port.h>
+#include <google/protobuf/stubs/once.h>
+#include <google/protobuf/io/coded_stream.h>
+#include <google/protobuf/wire_format_lite_inl.h>
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/generated_message_reflection.h>
+#include <google/protobuf/reflection_ops.h>
+#include <google/protobuf/wire_format.h>
+// This is a temporary google only hack
+#ifdef GOOGLE_PROTOBUF_ENFORCE_UNIQUENESS
+#include "third_party/protobuf/version.h"
+#endif
+// @@protoc_insertion_point(includes)
+namespace google {
+namespace firestore {
+namespace v1beta1 {
+class DocumentMaskDefaultTypeInternal {
+ public:
+  ::google::protobuf::internal::ExplicitlyConstructed<DocumentMask>
+      _instance;
+} _DocumentMask_default_instance_;
+class PreconditionDefaultTypeInternal {
+ public:
+  ::google::protobuf::internal::ExplicitlyConstructed<Precondition>
+      _instance;
+  bool exists_;
+  const ::google::protobuf::Timestamp* update_time_;
+} _Precondition_default_instance_;
+class TransactionOptions_ReadWriteDefaultTypeInternal {
+ public:
+  ::google::protobuf::internal::ExplicitlyConstructed<TransactionOptions_ReadWrite>
+      _instance;
+} _TransactionOptions_ReadWrite_default_instance_;
+class TransactionOptions_ReadOnlyDefaultTypeInternal {
+ public:
+  ::google::protobuf::internal::ExplicitlyConstructed<TransactionOptions_ReadOnly>
+      _instance;
+  const ::google::protobuf::Timestamp* read_time_;
+} _TransactionOptions_ReadOnly_default_instance_;
+class TransactionOptionsDefaultTypeInternal {
+ public:
+  ::google::protobuf::internal::ExplicitlyConstructed<TransactionOptions>
+      _instance;
+  const ::google::firestore::v1beta1::TransactionOptions_ReadOnly* read_only_;
+  const ::google::firestore::v1beta1::TransactionOptions_ReadWrite* read_write_;
+} _TransactionOptions_default_instance_;
+}  // namespace v1beta1
+}  // namespace firestore
+}  // namespace google
+namespace protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto {
+void InitDefaultsDocumentMaskImpl() {
+  GOOGLE_PROTOBUF_VERIFY_VERSION;
+
+#ifdef GOOGLE_PROTOBUF_ENFORCE_UNIQUENESS
+  ::google::protobuf::internal::InitProtobufDefaultsForceUnique();
+#else
+  ::google::protobuf::internal::InitProtobufDefaults();
+#endif  // GOOGLE_PROTOBUF_ENFORCE_UNIQUENESS
+  {
+    void* ptr = &::google::firestore::v1beta1::_DocumentMask_default_instance_;
+    new (ptr) ::google::firestore::v1beta1::DocumentMask();
+    ::google::protobuf::internal::OnShutdownDestroyMessage(ptr);
+  }
+  ::google::firestore::v1beta1::DocumentMask::InitAsDefaultInstance();
+}
+
+void InitDefaultsDocumentMask() {
+  static GOOGLE_PROTOBUF_DECLARE_ONCE(once);
+  ::google::protobuf::GoogleOnceInit(&once, &InitDefaultsDocumentMaskImpl);
+}
+
+void InitDefaultsPreconditionImpl() {
+  GOOGLE_PROTOBUF_VERIFY_VERSION;
+
+#ifdef GOOGLE_PROTOBUF_ENFORCE_UNIQUENESS
+  ::google::protobuf::internal::InitProtobufDefaultsForceUnique();
+#else
+  ::google::protobuf::internal::InitProtobufDefaults();
+#endif  // GOOGLE_PROTOBUF_ENFORCE_UNIQUENESS
+  protobuf_google_2fprotobuf_2ftimestamp_2eproto::InitDefaultsTimestamp();
+  {
+    void* ptr = &::google::firestore::v1beta1::_Precondition_default_instance_;
+    new (ptr) ::google::firestore::v1beta1::Precondition();
+    ::google::protobuf::internal::OnShutdownDestroyMessage(ptr);
+  }
+  ::google::firestore::v1beta1::Precondition::InitAsDefaultInstance();
+}
+
+void InitDefaultsPrecondition() {
+  static GOOGLE_PROTOBUF_DECLARE_ONCE(once);
+  ::google::protobuf::GoogleOnceInit(&once, &InitDefaultsPreconditionImpl);
+}
+
+void InitDefaultsTransactionOptions_ReadWriteImpl() {
+  GOOGLE_PROTOBUF_VERIFY_VERSION;
+
+#ifdef GOOGLE_PROTOBUF_ENFORCE_UNIQUENESS
+  ::google::protobuf::internal::InitProtobufDefaultsForceUnique();
+#else
+  ::google::protobuf::internal::InitProtobufDefaults();
+#endif  // GOOGLE_PROTOBUF_ENFORCE_UNIQUENESS
+  {
+    void* ptr = &::google::firestore::v1beta1::_TransactionOptions_ReadWrite_default_instance_;
+    new (ptr) ::google::firestore::v1beta1::TransactionOptions_ReadWrite();
+    ::google::protobuf::internal::OnShutdownDestroyMessage(ptr);
+  }
+  ::google::firestore::v1beta1::TransactionOptions_ReadWrite::InitAsDefaultInstance();
+}
+
+void InitDefaultsTransactionOptions_ReadWrite() {
+  static GOOGLE_PROTOBUF_DECLARE_ONCE(once);
+  ::google::protobuf::GoogleOnceInit(&once, &InitDefaultsTransactionOptions_ReadWriteImpl);
+}
+
+void InitDefaultsTransactionOptions_ReadOnlyImpl() {
+  GOOGLE_PROTOBUF_VERIFY_VERSION;
+
+#ifdef GOOGLE_PROTOBUF_ENFORCE_UNIQUENESS
+  ::google::protobuf::internal::InitProtobufDefaultsForceUnique();
+#else
+  ::google::protobuf::internal::InitProtobufDefaults();
+#endif  // GOOGLE_PROTOBUF_ENFORCE_UNIQUENESS
+  protobuf_google_2fprotobuf_2ftimestamp_2eproto::InitDefaultsTimestamp();
+  {
+    void* ptr = &::google::firestore::v1beta1::_TransactionOptions_ReadOnly_default_instance_;
+    new (ptr) ::google::firestore::v1beta1::TransactionOptions_ReadOnly();
+    ::google::protobuf::internal::OnShutdownDestroyMessage(ptr);
+  }
+  ::google::firestore::v1beta1::TransactionOptions_ReadOnly::InitAsDefaultInstance();
+}
+
+void InitDefaultsTransactionOptions_ReadOnly() {
+  static GOOGLE_PROTOBUF_DECLARE_ONCE(once);
+  ::google::protobuf::GoogleOnceInit(&once, &InitDefaultsTransactionOptions_ReadOnlyImpl);
+}
+
+void InitDefaultsTransactionOptionsImpl() {
+  GOOGLE_PROTOBUF_VERIFY_VERSION;
+
+#ifdef GOOGLE_PROTOBUF_ENFORCE_UNIQUENESS
+  ::google::protobuf::internal::InitProtobufDefaultsForceUnique();
+#else
+  ::google::protobuf::internal::InitProtobufDefaults();
+#endif  // GOOGLE_PROTOBUF_ENFORCE_UNIQUENESS
+  protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::InitDefaultsTransactionOptions_ReadOnly();
+  protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::InitDefaultsTransactionOptions_ReadWrite();
+  {
+    void* ptr = &::google::firestore::v1beta1::_TransactionOptions_default_instance_;
+    new (ptr) ::google::firestore::v1beta1::TransactionOptions();
+    ::google::protobuf::internal::OnShutdownDestroyMessage(ptr);
+  }
+  ::google::firestore::v1beta1::TransactionOptions::InitAsDefaultInstance();
+}
+
+void InitDefaultsTransactionOptions() {
+  static GOOGLE_PROTOBUF_DECLARE_ONCE(once);
+  ::google::protobuf::GoogleOnceInit(&once, &InitDefaultsTransactionOptionsImpl);
+}
+
+::google::protobuf::Metadata file_level_metadata[5];
+
+const ::google::protobuf::uint32 TableStruct::offsets[] GOOGLE_PROTOBUF_ATTRIBUTE_SECTION_VARIABLE(protodesc_cold) = {
+  ~0u,  // no _has_bits_
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::DocumentMask, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::DocumentMask, field_paths_),
+  ~0u,  // no _has_bits_
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::Precondition, _internal_metadata_),
+  ~0u,  // no _extensions_
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::Precondition, _oneof_case_[0]),
+  ~0u,  // no _weak_field_map_
+  offsetof(::google::firestore::v1beta1::PreconditionDefaultTypeInternal, exists_),
+  offsetof(::google::firestore::v1beta1::PreconditionDefaultTypeInternal, update_time_),
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::Precondition, condition_type_),
+  ~0u,  // no _has_bits_
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::TransactionOptions_ReadWrite, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::TransactionOptions_ReadWrite, retry_transaction_),
+  ~0u,  // no _has_bits_
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::TransactionOptions_ReadOnly, _internal_metadata_),
+  ~0u,  // no _extensions_
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::TransactionOptions_ReadOnly, _oneof_case_[0]),
+  ~0u,  // no _weak_field_map_
+  offsetof(::google::firestore::v1beta1::TransactionOptions_ReadOnlyDefaultTypeInternal, read_time_),
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::TransactionOptions_ReadOnly, consistency_selector_),
+  ~0u,  // no _has_bits_
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::TransactionOptions, _internal_metadata_),
+  ~0u,  // no _extensions_
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::TransactionOptions, _oneof_case_[0]),
+  ~0u,  // no _weak_field_map_
+  offsetof(::google::firestore::v1beta1::TransactionOptionsDefaultTypeInternal, read_only_),
+  offsetof(::google::firestore::v1beta1::TransactionOptionsDefaultTypeInternal, read_write_),
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::google::firestore::v1beta1::TransactionOptions, mode_),
+};
+static const ::google::protobuf::internal::MigrationSchema schemas[] GOOGLE_PROTOBUF_ATTRIBUTE_SECTION_VARIABLE(protodesc_cold) = {
+  { 0, -1, sizeof(::google::firestore::v1beta1::DocumentMask)},
+  { 6, -1, sizeof(::google::firestore::v1beta1::Precondition)},
+  { 14, -1, sizeof(::google::firestore::v1beta1::TransactionOptions_ReadWrite)},
+  { 20, -1, sizeof(::google::firestore::v1beta1::TransactionOptions_ReadOnly)},
+  { 27, -1, sizeof(::google::firestore::v1beta1::TransactionOptions)},
+};
+
+static ::google::protobuf::Message const * const file_default_instances[] = {
+  reinterpret_cast<const ::google::protobuf::Message*>(&::google::firestore::v1beta1::_DocumentMask_default_instance_),
+  reinterpret_cast<const ::google::protobuf::Message*>(&::google::firestore::v1beta1::_Precondition_default_instance_),
+  reinterpret_cast<const ::google::protobuf::Message*>(&::google::firestore::v1beta1::_TransactionOptions_ReadWrite_default_instance_),
+  reinterpret_cast<const ::google::protobuf::Message*>(&::google::firestore::v1beta1::_TransactionOptions_ReadOnly_default_instance_),
+  reinterpret_cast<const ::google::protobuf::Message*>(&::google::firestore::v1beta1::_TransactionOptions_default_instance_),
+};
+
+void protobuf_AssignDescriptors() {
+  AddDescriptors();
+  ::google::protobuf::MessageFactory* factory = NULL;
+  AssignDescriptors(
+      "google/firestore/v1beta1/common.proto", schemas, file_default_instances, TableStruct::offsets, factory,
+      file_level_metadata, NULL, NULL);
+}
+
+void protobuf_AssignDescriptorsOnce() {
+  static GOOGLE_PROTOBUF_DECLARE_ONCE(once);
+  ::google::protobuf::GoogleOnceInit(&once, &protobuf_AssignDescriptors);
+}
+
+void protobuf_RegisterTypes(const ::std::string&) GOOGLE_PROTOBUF_ATTRIBUTE_COLD;
+void protobuf_RegisterTypes(const ::std::string&) {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::internal::RegisterAllTypes(file_level_metadata, 5);
+}
+
+void AddDescriptorsImpl() {
+  InitDefaults();
+  static const char descriptor[] GOOGLE_PROTOBUF_ATTRIBUTE_SECTION_VARIABLE(protodesc_cold) = {
+      "\n%google/firestore/v1beta1/common.proto\022"
+      "\030google.firestore.v1beta1\032\034google/api/an"
+      "notations.proto\032\037google/protobuf/timesta"
+      "mp.proto\"#\n\014DocumentMask\022\023\n\013field_paths\030"
+      "\001 \003(\t\"e\n\014Precondition\022\020\n\006exists\030\001 \001(\010H\000\022"
+      "1\n\013update_time\030\002 \001(\0132\032.google.protobuf.T"
+      "imestampH\000B\020\n\016condition_type\"\263\002\n\022Transac"
+      "tionOptions\022J\n\tread_only\030\002 \001(\01325.google."
+      "firestore.v1beta1.TransactionOptions.Rea"
+      "dOnlyH\000\022L\n\nread_write\030\003 \001(\01326.google.fir"
+      "estore.v1beta1.TransactionOptions.ReadWr"
+      "iteH\000\032&\n\tReadWrite\022\031\n\021retry_transaction\030"
+      "\001 \001(\014\032S\n\010ReadOnly\022/\n\tread_time\030\002 \001(\0132\032.g"
+      "oogle.protobuf.TimestampH\000B\026\n\024consistenc"
+      "y_selectorB\006\n\004modeB\230\001\n\034com.google.firest"
+      "ore.v1beta1B\013CommonProtoP\001ZAgoogle.golan"
+      "g.org/genproto/googleapis/firestore/v1be"
+      "ta1;firestore\242\002\004GCFS\252\002\036Google.Cloud.Fire"
+      "store.V1Beta1b\006proto3"
+  };
+  ::google::protobuf::DescriptorPool::InternalAddGeneratedFile(
+      descriptor, 741);
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedFile(
+    "google/firestore/v1beta1/common.proto", &protobuf_RegisterTypes);
+  ::protobuf_google_2fapi_2fannotations_2eproto::AddDescriptors();
+  ::protobuf_google_2fprotobuf_2ftimestamp_2eproto::AddDescriptors();
+}
+
+void AddDescriptors() {
+  static GOOGLE_PROTOBUF_DECLARE_ONCE(once);
+  ::google::protobuf::GoogleOnceInit(&once, &AddDescriptorsImpl);
+}
+// Force AddDescriptors() to be called at dynamic initialization time.
+struct StaticDescriptorInitializer {
+  StaticDescriptorInitializer() {
+    AddDescriptors();
+  }
+} static_descriptor_initializer;
+}  // namespace protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto
+namespace google {
+namespace firestore {
+namespace v1beta1 {
+
+// ===================================================================
+
+void DocumentMask::InitAsDefaultInstance() {
+}
+#if !defined(_MSC_VER) || _MSC_VER >= 1900
+const int DocumentMask::kFieldPathsFieldNumber;
+#endif  // !defined(_MSC_VER) || _MSC_VER >= 1900
+
+DocumentMask::DocumentMask()
+  : ::google::protobuf::Message(), _internal_metadata_(NULL) {
+  if (GOOGLE_PREDICT_TRUE(this != internal_default_instance())) {
+    ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::InitDefaultsDocumentMask();
+  }
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:google.firestore.v1beta1.DocumentMask)
+}
+DocumentMask::DocumentMask(const DocumentMask& from)
+  : ::google::protobuf::Message(),
+      _internal_metadata_(NULL),
+      field_paths_(from.field_paths_),
+      _cached_size_(0) {
+  _internal_metadata_.MergeFrom(from._internal_metadata_);
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1beta1.DocumentMask)
+}
+
+void DocumentMask::SharedCtor() {
+  _cached_size_ = 0;
+}
+
+DocumentMask::~DocumentMask() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1beta1.DocumentMask)
+  SharedDtor();
+}
+
+void DocumentMask::SharedDtor() {
+}
+
+void DocumentMask::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* DocumentMask::descriptor() {
+  ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::protobuf_AssignDescriptorsOnce();
+  return ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::file_level_metadata[kIndexInFileMessages].descriptor;
+}
+
+const DocumentMask& DocumentMask::default_instance() {
+  ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::InitDefaultsDocumentMask();
+  return *internal_default_instance();
+}
+
+DocumentMask* DocumentMask::New(::google::protobuf::Arena* arena) const {
+  DocumentMask* n = new DocumentMask;
+  if (arena != NULL) {
+    arena->Own(n);
+  }
+  return n;
+}
+
+void DocumentMask::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1beta1.DocumentMask)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  field_paths_.Clear();
+  _internal_metadata_.Clear();
+}
+
+bool DocumentMask::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!GOOGLE_PREDICT_TRUE(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:google.firestore.v1beta1.DocumentMask)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoffNoLastTag(127u);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // repeated string field_paths = 1;
+      case 1: {
+        if (static_cast< ::google::protobuf::uint8>(tag) ==
+            static_cast< ::google::protobuf::uint8>(10u /* 10 & 0xFF */)) {
+          DO_(::google::protobuf::internal::WireFormatLite::ReadString(
+                input, this->add_field_paths()));
+          DO_(::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+            this->field_paths(this->field_paths_size() - 1).data(),
+            static_cast<int>(this->field_paths(this->field_paths_size() - 1).length()),
+            ::google::protobuf::internal::WireFormatLite::PARSE,
+            "google.firestore.v1beta1.DocumentMask.field_paths"));
+        } else {
+          goto handle_unusual;
+        }
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, _internal_metadata_.mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:google.firestore.v1beta1.DocumentMask)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:google.firestore.v1beta1.DocumentMask)
+  return false;
+#undef DO_
+}
+
+void DocumentMask::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:google.firestore.v1beta1.DocumentMask)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // repeated string field_paths = 1;
+  for (int i = 0, n = this->field_paths_size(); i < n; i++) {
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+      this->field_paths(i).data(), static_cast<int>(this->field_paths(i).length()),
+      ::google::protobuf::internal::WireFormatLite::SERIALIZE,
+      "google.firestore.v1beta1.DocumentMask.field_paths");
+    ::google::protobuf::internal::WireFormatLite::WriteString(
+      1, this->field_paths(i), output);
+  }
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()), output);
+  }
+  // @@protoc_insertion_point(serialize_end:google.firestore.v1beta1.DocumentMask)
+}
+
+::google::protobuf::uint8* DocumentMask::InternalSerializeWithCachedSizesToArray(
+    bool deterministic, ::google::protobuf::uint8* target) const {
+  (void)deterministic; // Unused
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1beta1.DocumentMask)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // repeated string field_paths = 1;
+  for (int i = 0, n = this->field_paths_size(); i < n; i++) {
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+      this->field_paths(i).data(), static_cast<int>(this->field_paths(i).length()),
+      ::google::protobuf::internal::WireFormatLite::SERIALIZE,
+      "google.firestore.v1beta1.DocumentMask.field_paths");
+    target = ::google::protobuf::internal::WireFormatLite::
+      WriteStringToArray(1, this->field_paths(i), target);
+  }
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1beta1.DocumentMask)
+  return target;
+}
+
+size_t DocumentMask::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1beta1.DocumentMask)
+  size_t total_size = 0;
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()));
+  }
+  // repeated string field_paths = 1;
+  total_size += 1 *
+      ::google::protobuf::internal::FromIntSize(this->field_paths_size());
+  for (int i = 0, n = this->field_paths_size(); i < n; i++) {
+    total_size += ::google::protobuf::internal::WireFormatLite::StringSize(
+      this->field_paths(i));
+  }
+
+  int cached_size = ::google::protobuf::internal::ToCachedSize(total_size);
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = cached_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void DocumentMask::MergeFrom(const ::google::protobuf::Message& from) {
+// @@protoc_insertion_point(generalized_merge_from_start:google.firestore.v1beta1.DocumentMask)
+  GOOGLE_DCHECK_NE(&from, this);
+  const DocumentMask* source =
+      ::google::protobuf::internal::DynamicCastToGenerated<const DocumentMask>(
+          &from);
+  if (source == NULL) {
+  // @@protoc_insertion_point(generalized_merge_from_cast_fail:google.firestore.v1beta1.DocumentMask)
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+  // @@protoc_insertion_point(generalized_merge_from_cast_success:google.firestore.v1beta1.DocumentMask)
+    MergeFrom(*source);
+  }
+}
+
+void DocumentMask::MergeFrom(const DocumentMask& from) {
+// @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1beta1.DocumentMask)
+  GOOGLE_DCHECK_NE(&from, this);
+  _internal_metadata_.MergeFrom(from._internal_metadata_);
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  field_paths_.MergeFrom(from.field_paths_);
+}
+
+void DocumentMask::CopyFrom(const ::google::protobuf::Message& from) {
+// @@protoc_insertion_point(generalized_copy_from_start:google.firestore.v1beta1.DocumentMask)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void DocumentMask::CopyFrom(const DocumentMask& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1beta1.DocumentMask)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool DocumentMask::IsInitialized() const {
+  return true;
+}
+
+void DocumentMask::Swap(DocumentMask* other) {
+  if (other == this) return;
+  InternalSwap(other);
+}
+void DocumentMask::InternalSwap(DocumentMask* other) {
+  using std::swap;
+  field_paths_.InternalSwap(&other->field_paths_);
+  _internal_metadata_.Swap(&other->_internal_metadata_);
+  swap(_cached_size_, other->_cached_size_);
+}
+
+::google::protobuf::Metadata DocumentMask::GetMetadata() const {
+  protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::protobuf_AssignDescriptorsOnce();
+  return ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::file_level_metadata[kIndexInFileMessages];
+}
+
+
+// ===================================================================
+
+void Precondition::InitAsDefaultInstance() {
+  ::google::firestore::v1beta1::_Precondition_default_instance_.exists_ = false;
+  ::google::firestore::v1beta1::_Precondition_default_instance_.update_time_ = const_cast< ::google::protobuf::Timestamp*>(
+      ::google::protobuf::Timestamp::internal_default_instance());
+}
+void Precondition::set_allocated_update_time(::google::protobuf::Timestamp* update_time) {
+  ::google::protobuf::Arena* message_arena = GetArenaNoVirtual();
+  clear_condition_type();
+  if (update_time) {
+    ::google::protobuf::Arena* submessage_arena =
+      reinterpret_cast< ::google::protobuf::MessageLite*>(update_time)->GetArena();
+    if (message_arena != submessage_arena) {
+      update_time = ::google::protobuf::internal::GetOwnedMessage(
+          message_arena, update_time, submessage_arena);
+    }
+    set_has_update_time();
+    condition_type_.update_time_ = update_time;
+  }
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1beta1.Precondition.update_time)
+}
+void Precondition::clear_update_time() {
+  if (has_update_time()) {
+    delete condition_type_.update_time_;
+    clear_has_condition_type();
+  }
+}
+#if !defined(_MSC_VER) || _MSC_VER >= 1900
+const int Precondition::kExistsFieldNumber;
+const int Precondition::kUpdateTimeFieldNumber;
+#endif  // !defined(_MSC_VER) || _MSC_VER >= 1900
+
+Precondition::Precondition()
+  : ::google::protobuf::Message(), _internal_metadata_(NULL) {
+  if (GOOGLE_PREDICT_TRUE(this != internal_default_instance())) {
+    ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::InitDefaultsPrecondition();
+  }
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:google.firestore.v1beta1.Precondition)
+}
+Precondition::Precondition(const Precondition& from)
+  : ::google::protobuf::Message(),
+      _internal_metadata_(NULL),
+      _cached_size_(0) {
+  _internal_metadata_.MergeFrom(from._internal_metadata_);
+  clear_has_condition_type();
+  switch (from.condition_type_case()) {
+    case kExists: {
+      set_exists(from.exists());
+      break;
+    }
+    case kUpdateTime: {
+      mutable_update_time()->::google::protobuf::Timestamp::MergeFrom(from.update_time());
+      break;
+    }
+    case CONDITION_TYPE_NOT_SET: {
+      break;
+    }
+  }
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1beta1.Precondition)
+}
+
+void Precondition::SharedCtor() {
+  clear_has_condition_type();
+  _cached_size_ = 0;
+}
+
+Precondition::~Precondition() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1beta1.Precondition)
+  SharedDtor();
+}
+
+void Precondition::SharedDtor() {
+  if (has_condition_type()) {
+    clear_condition_type();
+  }
+}
+
+void Precondition::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* Precondition::descriptor() {
+  ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::protobuf_AssignDescriptorsOnce();
+  return ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::file_level_metadata[kIndexInFileMessages].descriptor;
+}
+
+const Precondition& Precondition::default_instance() {
+  ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::InitDefaultsPrecondition();
+  return *internal_default_instance();
+}
+
+Precondition* Precondition::New(::google::protobuf::Arena* arena) const {
+  Precondition* n = new Precondition;
+  if (arena != NULL) {
+    arena->Own(n);
+  }
+  return n;
+}
+
+void Precondition::clear_condition_type() {
+// @@protoc_insertion_point(one_of_clear_start:google.firestore.v1beta1.Precondition)
+  switch (condition_type_case()) {
+    case kExists: {
+      // No need to clear
+      break;
+    }
+    case kUpdateTime: {
+      delete condition_type_.update_time_;
+      break;
+    }
+    case CONDITION_TYPE_NOT_SET: {
+      break;
+    }
+  }
+  _oneof_case_[0] = CONDITION_TYPE_NOT_SET;
+}
+
+
+void Precondition::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1beta1.Precondition)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  clear_condition_type();
+  _internal_metadata_.Clear();
+}
+
+bool Precondition::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!GOOGLE_PREDICT_TRUE(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:google.firestore.v1beta1.Precondition)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoffNoLastTag(127u);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // bool exists = 1;
+      case 1: {
+        if (static_cast< ::google::protobuf::uint8>(tag) ==
+            static_cast< ::google::protobuf::uint8>(8u /* 8 & 0xFF */)) {
+          clear_condition_type();
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   bool, ::google::protobuf::internal::WireFormatLite::TYPE_BOOL>(
+                 input, &condition_type_.exists_)));
+          set_has_exists();
+        } else {
+          goto handle_unusual;
+        }
+        break;
+      }
+
+      // .google.protobuf.Timestamp update_time = 2;
+      case 2: {
+        if (static_cast< ::google::protobuf::uint8>(tag) ==
+            static_cast< ::google::protobuf::uint8>(18u /* 18 & 0xFF */)) {
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessage(
+               input, mutable_update_time()));
+        } else {
+          goto handle_unusual;
+        }
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, _internal_metadata_.mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:google.firestore.v1beta1.Precondition)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:google.firestore.v1beta1.Precondition)
+  return false;
+#undef DO_
+}
+
+void Precondition::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:google.firestore.v1beta1.Precondition)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // bool exists = 1;
+  if (has_exists()) {
+    ::google::protobuf::internal::WireFormatLite::WriteBool(1, this->exists(), output);
+  }
+
+  // .google.protobuf.Timestamp update_time = 2;
+  if (has_update_time()) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      2, *condition_type_.update_time_, output);
+  }
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()), output);
+  }
+  // @@protoc_insertion_point(serialize_end:google.firestore.v1beta1.Precondition)
+}
+
+::google::protobuf::uint8* Precondition::InternalSerializeWithCachedSizesToArray(
+    bool deterministic, ::google::protobuf::uint8* target) const {
+  (void)deterministic; // Unused
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1beta1.Precondition)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // bool exists = 1;
+  if (has_exists()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteBoolToArray(1, this->exists(), target);
+  }
+
+  // .google.protobuf.Timestamp update_time = 2;
+  if (has_update_time()) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessageToArray(
+        2, *condition_type_.update_time_, deterministic, target);
+  }
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1beta1.Precondition)
+  return target;
+}
+
+size_t Precondition::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1beta1.Precondition)
+  size_t total_size = 0;
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()));
+  }
+  switch (condition_type_case()) {
+    // bool exists = 1;
+    case kExists: {
+      total_size += 1 + 1;
+      break;
+    }
+    // .google.protobuf.Timestamp update_time = 2;
+    case kUpdateTime: {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          *condition_type_.update_time_);
+      break;
+    }
+    case CONDITION_TYPE_NOT_SET: {
+      break;
+    }
+  }
+  int cached_size = ::google::protobuf::internal::ToCachedSize(total_size);
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = cached_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void Precondition::MergeFrom(const ::google::protobuf::Message& from) {
+// @@protoc_insertion_point(generalized_merge_from_start:google.firestore.v1beta1.Precondition)
+  GOOGLE_DCHECK_NE(&from, this);
+  const Precondition* source =
+      ::google::protobuf::internal::DynamicCastToGenerated<const Precondition>(
+          &from);
+  if (source == NULL) {
+  // @@protoc_insertion_point(generalized_merge_from_cast_fail:google.firestore.v1beta1.Precondition)
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+  // @@protoc_insertion_point(generalized_merge_from_cast_success:google.firestore.v1beta1.Precondition)
+    MergeFrom(*source);
+  }
+}
+
+void Precondition::MergeFrom(const Precondition& from) {
+// @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1beta1.Precondition)
+  GOOGLE_DCHECK_NE(&from, this);
+  _internal_metadata_.MergeFrom(from._internal_metadata_);
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  switch (from.condition_type_case()) {
+    case kExists: {
+      set_exists(from.exists());
+      break;
+    }
+    case kUpdateTime: {
+      mutable_update_time()->::google::protobuf::Timestamp::MergeFrom(from.update_time());
+      break;
+    }
+    case CONDITION_TYPE_NOT_SET: {
+      break;
+    }
+  }
+}
+
+void Precondition::CopyFrom(const ::google::protobuf::Message& from) {
+// @@protoc_insertion_point(generalized_copy_from_start:google.firestore.v1beta1.Precondition)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void Precondition::CopyFrom(const Precondition& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1beta1.Precondition)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool Precondition::IsInitialized() const {
+  return true;
+}
+
+void Precondition::Swap(Precondition* other) {
+  if (other == this) return;
+  InternalSwap(other);
+}
+void Precondition::InternalSwap(Precondition* other) {
+  using std::swap;
+  swap(condition_type_, other->condition_type_);
+  swap(_oneof_case_[0], other->_oneof_case_[0]);
+  _internal_metadata_.Swap(&other->_internal_metadata_);
+  swap(_cached_size_, other->_cached_size_);
+}
+
+::google::protobuf::Metadata Precondition::GetMetadata() const {
+  protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::protobuf_AssignDescriptorsOnce();
+  return ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::file_level_metadata[kIndexInFileMessages];
+}
+
+
+// ===================================================================
+
+void TransactionOptions_ReadWrite::InitAsDefaultInstance() {
+}
+#if !defined(_MSC_VER) || _MSC_VER >= 1900
+const int TransactionOptions_ReadWrite::kRetryTransactionFieldNumber;
+#endif  // !defined(_MSC_VER) || _MSC_VER >= 1900
+
+TransactionOptions_ReadWrite::TransactionOptions_ReadWrite()
+  : ::google::protobuf::Message(), _internal_metadata_(NULL) {
+  if (GOOGLE_PREDICT_TRUE(this != internal_default_instance())) {
+    ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::InitDefaultsTransactionOptions_ReadWrite();
+  }
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+}
+TransactionOptions_ReadWrite::TransactionOptions_ReadWrite(const TransactionOptions_ReadWrite& from)
+  : ::google::protobuf::Message(),
+      _internal_metadata_(NULL),
+      _cached_size_(0) {
+  _internal_metadata_.MergeFrom(from._internal_metadata_);
+  retry_transaction_.UnsafeSetDefault(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+  if (from.retry_transaction().size() > 0) {
+    retry_transaction_.AssignWithDefault(&::google::protobuf::internal::GetEmptyStringAlreadyInited(), from.retry_transaction_);
+  }
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+}
+
+void TransactionOptions_ReadWrite::SharedCtor() {
+  retry_transaction_.UnsafeSetDefault(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+  _cached_size_ = 0;
+}
+
+TransactionOptions_ReadWrite::~TransactionOptions_ReadWrite() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  SharedDtor();
+}
+
+void TransactionOptions_ReadWrite::SharedDtor() {
+  retry_transaction_.DestroyNoArena(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+}
+
+void TransactionOptions_ReadWrite::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* TransactionOptions_ReadWrite::descriptor() {
+  ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::protobuf_AssignDescriptorsOnce();
+  return ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::file_level_metadata[kIndexInFileMessages].descriptor;
+}
+
+const TransactionOptions_ReadWrite& TransactionOptions_ReadWrite::default_instance() {
+  ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::InitDefaultsTransactionOptions_ReadWrite();
+  return *internal_default_instance();
+}
+
+TransactionOptions_ReadWrite* TransactionOptions_ReadWrite::New(::google::protobuf::Arena* arena) const {
+  TransactionOptions_ReadWrite* n = new TransactionOptions_ReadWrite;
+  if (arena != NULL) {
+    arena->Own(n);
+  }
+  return n;
+}
+
+void TransactionOptions_ReadWrite::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  retry_transaction_.ClearToEmptyNoArena(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+  _internal_metadata_.Clear();
+}
+
+bool TransactionOptions_ReadWrite::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!GOOGLE_PREDICT_TRUE(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoffNoLastTag(127u);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // bytes retry_transaction = 1;
+      case 1: {
+        if (static_cast< ::google::protobuf::uint8>(tag) ==
+            static_cast< ::google::protobuf::uint8>(10u /* 10 & 0xFF */)) {
+          DO_(::google::protobuf::internal::WireFormatLite::ReadBytes(
+                input, this->mutable_retry_transaction()));
+        } else {
+          goto handle_unusual;
+        }
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, _internal_metadata_.mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  return false;
+#undef DO_
+}
+
+void TransactionOptions_ReadWrite::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // bytes retry_transaction = 1;
+  if (this->retry_transaction().size() > 0) {
+    ::google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(
+      1, this->retry_transaction(), output);
+  }
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()), output);
+  }
+  // @@protoc_insertion_point(serialize_end:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+}
+
+::google::protobuf::uint8* TransactionOptions_ReadWrite::InternalSerializeWithCachedSizesToArray(
+    bool deterministic, ::google::protobuf::uint8* target) const {
+  (void)deterministic; // Unused
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // bytes retry_transaction = 1;
+  if (this->retry_transaction().size() > 0) {
+    target =
+      ::google::protobuf::internal::WireFormatLite::WriteBytesToArray(
+        1, this->retry_transaction(), target);
+  }
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  return target;
+}
+
+size_t TransactionOptions_ReadWrite::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  size_t total_size = 0;
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()));
+  }
+  // bytes retry_transaction = 1;
+  if (this->retry_transaction().size() > 0) {
+    total_size += 1 +
+      ::google::protobuf::internal::WireFormatLite::BytesSize(
+        this->retry_transaction());
+  }
+
+  int cached_size = ::google::protobuf::internal::ToCachedSize(total_size);
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = cached_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void TransactionOptions_ReadWrite::MergeFrom(const ::google::protobuf::Message& from) {
+// @@protoc_insertion_point(generalized_merge_from_start:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  GOOGLE_DCHECK_NE(&from, this);
+  const TransactionOptions_ReadWrite* source =
+      ::google::protobuf::internal::DynamicCastToGenerated<const TransactionOptions_ReadWrite>(
+          &from);
+  if (source == NULL) {
+  // @@protoc_insertion_point(generalized_merge_from_cast_fail:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+  // @@protoc_insertion_point(generalized_merge_from_cast_success:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+    MergeFrom(*source);
+  }
+}
+
+void TransactionOptions_ReadWrite::MergeFrom(const TransactionOptions_ReadWrite& from) {
+// @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  GOOGLE_DCHECK_NE(&from, this);
+  _internal_metadata_.MergeFrom(from._internal_metadata_);
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (from.retry_transaction().size() > 0) {
+
+    retry_transaction_.AssignWithDefault(&::google::protobuf::internal::GetEmptyStringAlreadyInited(), from.retry_transaction_);
+  }
+}
+
+void TransactionOptions_ReadWrite::CopyFrom(const ::google::protobuf::Message& from) {
+// @@protoc_insertion_point(generalized_copy_from_start:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void TransactionOptions_ReadWrite::CopyFrom(const TransactionOptions_ReadWrite& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1beta1.TransactionOptions.ReadWrite)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool TransactionOptions_ReadWrite::IsInitialized() const {
+  return true;
+}
+
+void TransactionOptions_ReadWrite::Swap(TransactionOptions_ReadWrite* other) {
+  if (other == this) return;
+  InternalSwap(other);
+}
+void TransactionOptions_ReadWrite::InternalSwap(TransactionOptions_ReadWrite* other) {
+  using std::swap;
+  retry_transaction_.Swap(&other->retry_transaction_);
+  _internal_metadata_.Swap(&other->_internal_metadata_);
+  swap(_cached_size_, other->_cached_size_);
+}
+
+::google::protobuf::Metadata TransactionOptions_ReadWrite::GetMetadata() const {
+  protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::protobuf_AssignDescriptorsOnce();
+  return ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::file_level_metadata[kIndexInFileMessages];
+}
+
+
+// ===================================================================
+
+void TransactionOptions_ReadOnly::InitAsDefaultInstance() {
+  ::google::firestore::v1beta1::_TransactionOptions_ReadOnly_default_instance_.read_time_ = const_cast< ::google::protobuf::Timestamp*>(
+      ::google::protobuf::Timestamp::internal_default_instance());
+}
+void TransactionOptions_ReadOnly::set_allocated_read_time(::google::protobuf::Timestamp* read_time) {
+  ::google::protobuf::Arena* message_arena = GetArenaNoVirtual();
+  clear_consistency_selector();
+  if (read_time) {
+    ::google::protobuf::Arena* submessage_arena =
+      reinterpret_cast< ::google::protobuf::MessageLite*>(read_time)->GetArena();
+    if (message_arena != submessage_arena) {
+      read_time = ::google::protobuf::internal::GetOwnedMessage(
+          message_arena, read_time, submessage_arena);
+    }
+    set_has_read_time();
+    consistency_selector_.read_time_ = read_time;
+  }
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1beta1.TransactionOptions.ReadOnly.read_time)
+}
+void TransactionOptions_ReadOnly::clear_read_time() {
+  if (has_read_time()) {
+    delete consistency_selector_.read_time_;
+    clear_has_consistency_selector();
+  }
+}
+#if !defined(_MSC_VER) || _MSC_VER >= 1900
+const int TransactionOptions_ReadOnly::kReadTimeFieldNumber;
+#endif  // !defined(_MSC_VER) || _MSC_VER >= 1900
+
+TransactionOptions_ReadOnly::TransactionOptions_ReadOnly()
+  : ::google::protobuf::Message(), _internal_metadata_(NULL) {
+  if (GOOGLE_PREDICT_TRUE(this != internal_default_instance())) {
+    ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::InitDefaultsTransactionOptions_ReadOnly();
+  }
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+}
+TransactionOptions_ReadOnly::TransactionOptions_ReadOnly(const TransactionOptions_ReadOnly& from)
+  : ::google::protobuf::Message(),
+      _internal_metadata_(NULL),
+      _cached_size_(0) {
+  _internal_metadata_.MergeFrom(from._internal_metadata_);
+  clear_has_consistency_selector();
+  switch (from.consistency_selector_case()) {
+    case kReadTime: {
+      mutable_read_time()->::google::protobuf::Timestamp::MergeFrom(from.read_time());
+      break;
+    }
+    case CONSISTENCY_SELECTOR_NOT_SET: {
+      break;
+    }
+  }
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+}
+
+void TransactionOptions_ReadOnly::SharedCtor() {
+  clear_has_consistency_selector();
+  _cached_size_ = 0;
+}
+
+TransactionOptions_ReadOnly::~TransactionOptions_ReadOnly() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  SharedDtor();
+}
+
+void TransactionOptions_ReadOnly::SharedDtor() {
+  if (has_consistency_selector()) {
+    clear_consistency_selector();
+  }
+}
+
+void TransactionOptions_ReadOnly::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* TransactionOptions_ReadOnly::descriptor() {
+  ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::protobuf_AssignDescriptorsOnce();
+  return ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::file_level_metadata[kIndexInFileMessages].descriptor;
+}
+
+const TransactionOptions_ReadOnly& TransactionOptions_ReadOnly::default_instance() {
+  ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::InitDefaultsTransactionOptions_ReadOnly();
+  return *internal_default_instance();
+}
+
+TransactionOptions_ReadOnly* TransactionOptions_ReadOnly::New(::google::protobuf::Arena* arena) const {
+  TransactionOptions_ReadOnly* n = new TransactionOptions_ReadOnly;
+  if (arena != NULL) {
+    arena->Own(n);
+  }
+  return n;
+}
+
+void TransactionOptions_ReadOnly::clear_consistency_selector() {
+// @@protoc_insertion_point(one_of_clear_start:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  switch (consistency_selector_case()) {
+    case kReadTime: {
+      delete consistency_selector_.read_time_;
+      break;
+    }
+    case CONSISTENCY_SELECTOR_NOT_SET: {
+      break;
+    }
+  }
+  _oneof_case_[0] = CONSISTENCY_SELECTOR_NOT_SET;
+}
+
+
+void TransactionOptions_ReadOnly::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  clear_consistency_selector();
+  _internal_metadata_.Clear();
+}
+
+bool TransactionOptions_ReadOnly::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!GOOGLE_PREDICT_TRUE(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoffNoLastTag(127u);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // .google.protobuf.Timestamp read_time = 2;
+      case 2: {
+        if (static_cast< ::google::protobuf::uint8>(tag) ==
+            static_cast< ::google::protobuf::uint8>(18u /* 18 & 0xFF */)) {
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessage(
+               input, mutable_read_time()));
+        } else {
+          goto handle_unusual;
+        }
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, _internal_metadata_.mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  return false;
+#undef DO_
+}
+
+void TransactionOptions_ReadOnly::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // .google.protobuf.Timestamp read_time = 2;
+  if (has_read_time()) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      2, *consistency_selector_.read_time_, output);
+  }
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()), output);
+  }
+  // @@protoc_insertion_point(serialize_end:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+}
+
+::google::protobuf::uint8* TransactionOptions_ReadOnly::InternalSerializeWithCachedSizesToArray(
+    bool deterministic, ::google::protobuf::uint8* target) const {
+  (void)deterministic; // Unused
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // .google.protobuf.Timestamp read_time = 2;
+  if (has_read_time()) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessageToArray(
+        2, *consistency_selector_.read_time_, deterministic, target);
+  }
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  return target;
+}
+
+size_t TransactionOptions_ReadOnly::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  size_t total_size = 0;
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()));
+  }
+  switch (consistency_selector_case()) {
+    // .google.protobuf.Timestamp read_time = 2;
+    case kReadTime: {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          *consistency_selector_.read_time_);
+      break;
+    }
+    case CONSISTENCY_SELECTOR_NOT_SET: {
+      break;
+    }
+  }
+  int cached_size = ::google::protobuf::internal::ToCachedSize(total_size);
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = cached_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void TransactionOptions_ReadOnly::MergeFrom(const ::google::protobuf::Message& from) {
+// @@protoc_insertion_point(generalized_merge_from_start:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  GOOGLE_DCHECK_NE(&from, this);
+  const TransactionOptions_ReadOnly* source =
+      ::google::protobuf::internal::DynamicCastToGenerated<const TransactionOptions_ReadOnly>(
+          &from);
+  if (source == NULL) {
+  // @@protoc_insertion_point(generalized_merge_from_cast_fail:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+  // @@protoc_insertion_point(generalized_merge_from_cast_success:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+    MergeFrom(*source);
+  }
+}
+
+void TransactionOptions_ReadOnly::MergeFrom(const TransactionOptions_ReadOnly& from) {
+// @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  GOOGLE_DCHECK_NE(&from, this);
+  _internal_metadata_.MergeFrom(from._internal_metadata_);
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  switch (from.consistency_selector_case()) {
+    case kReadTime: {
+      mutable_read_time()->::google::protobuf::Timestamp::MergeFrom(from.read_time());
+      break;
+    }
+    case CONSISTENCY_SELECTOR_NOT_SET: {
+      break;
+    }
+  }
+}
+
+void TransactionOptions_ReadOnly::CopyFrom(const ::google::protobuf::Message& from) {
+// @@protoc_insertion_point(generalized_copy_from_start:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void TransactionOptions_ReadOnly::CopyFrom(const TransactionOptions_ReadOnly& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1beta1.TransactionOptions.ReadOnly)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool TransactionOptions_ReadOnly::IsInitialized() const {
+  return true;
+}
+
+void TransactionOptions_ReadOnly::Swap(TransactionOptions_ReadOnly* other) {
+  if (other == this) return;
+  InternalSwap(other);
+}
+void TransactionOptions_ReadOnly::InternalSwap(TransactionOptions_ReadOnly* other) {
+  using std::swap;
+  swap(consistency_selector_, other->consistency_selector_);
+  swap(_oneof_case_[0], other->_oneof_case_[0]);
+  _internal_metadata_.Swap(&other->_internal_metadata_);
+  swap(_cached_size_, other->_cached_size_);
+}
+
+::google::protobuf::Metadata TransactionOptions_ReadOnly::GetMetadata() const {
+  protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::protobuf_AssignDescriptorsOnce();
+  return ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::file_level_metadata[kIndexInFileMessages];
+}
+
+
+// ===================================================================
+
+void TransactionOptions::InitAsDefaultInstance() {
+  ::google::firestore::v1beta1::_TransactionOptions_default_instance_.read_only_ = const_cast< ::google::firestore::v1beta1::TransactionOptions_ReadOnly*>(
+      ::google::firestore::v1beta1::TransactionOptions_ReadOnly::internal_default_instance());
+  ::google::firestore::v1beta1::_TransactionOptions_default_instance_.read_write_ = const_cast< ::google::firestore::v1beta1::TransactionOptions_ReadWrite*>(
+      ::google::firestore::v1beta1::TransactionOptions_ReadWrite::internal_default_instance());
+}
+void TransactionOptions::set_allocated_read_only(::google::firestore::v1beta1::TransactionOptions_ReadOnly* read_only) {
+  ::google::protobuf::Arena* message_arena = GetArenaNoVirtual();
+  clear_mode();
+  if (read_only) {
+    ::google::protobuf::Arena* submessage_arena = NULL;
+    if (message_arena != submessage_arena) {
+      read_only = ::google::protobuf::internal::GetOwnedMessage(
+          message_arena, read_only, submessage_arena);
+    }
+    set_has_read_only();
+    mode_.read_only_ = read_only;
+  }
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1beta1.TransactionOptions.read_only)
+}
+void TransactionOptions::set_allocated_read_write(::google::firestore::v1beta1::TransactionOptions_ReadWrite* read_write) {
+  ::google::protobuf::Arena* message_arena = GetArenaNoVirtual();
+  clear_mode();
+  if (read_write) {
+    ::google::protobuf::Arena* submessage_arena = NULL;
+    if (message_arena != submessage_arena) {
+      read_write = ::google::protobuf::internal::GetOwnedMessage(
+          message_arena, read_write, submessage_arena);
+    }
+    set_has_read_write();
+    mode_.read_write_ = read_write;
+  }
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1beta1.TransactionOptions.read_write)
+}
+#if !defined(_MSC_VER) || _MSC_VER >= 1900
+const int TransactionOptions::kReadOnlyFieldNumber;
+const int TransactionOptions::kReadWriteFieldNumber;
+#endif  // !defined(_MSC_VER) || _MSC_VER >= 1900
+
+TransactionOptions::TransactionOptions()
+  : ::google::protobuf::Message(), _internal_metadata_(NULL) {
+  if (GOOGLE_PREDICT_TRUE(this != internal_default_instance())) {
+    ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::InitDefaultsTransactionOptions();
+  }
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:google.firestore.v1beta1.TransactionOptions)
+}
+TransactionOptions::TransactionOptions(const TransactionOptions& from)
+  : ::google::protobuf::Message(),
+      _internal_metadata_(NULL),
+      _cached_size_(0) {
+  _internal_metadata_.MergeFrom(from._internal_metadata_);
+  clear_has_mode();
+  switch (from.mode_case()) {
+    case kReadOnly: {
+      mutable_read_only()->::google::firestore::v1beta1::TransactionOptions_ReadOnly::MergeFrom(from.read_only());
+      break;
+    }
+    case kReadWrite: {
+      mutable_read_write()->::google::firestore::v1beta1::TransactionOptions_ReadWrite::MergeFrom(from.read_write());
+      break;
+    }
+    case MODE_NOT_SET: {
+      break;
+    }
+  }
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1beta1.TransactionOptions)
+}
+
+void TransactionOptions::SharedCtor() {
+  clear_has_mode();
+  _cached_size_ = 0;
+}
+
+TransactionOptions::~TransactionOptions() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1beta1.TransactionOptions)
+  SharedDtor();
+}
+
+void TransactionOptions::SharedDtor() {
+  if (has_mode()) {
+    clear_mode();
+  }
+}
+
+void TransactionOptions::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* TransactionOptions::descriptor() {
+  ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::protobuf_AssignDescriptorsOnce();
+  return ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::file_level_metadata[kIndexInFileMessages].descriptor;
+}
+
+const TransactionOptions& TransactionOptions::default_instance() {
+  ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::InitDefaultsTransactionOptions();
+  return *internal_default_instance();
+}
+
+TransactionOptions* TransactionOptions::New(::google::protobuf::Arena* arena) const {
+  TransactionOptions* n = new TransactionOptions;
+  if (arena != NULL) {
+    arena->Own(n);
+  }
+  return n;
+}
+
+void TransactionOptions::clear_mode() {
+// @@protoc_insertion_point(one_of_clear_start:google.firestore.v1beta1.TransactionOptions)
+  switch (mode_case()) {
+    case kReadOnly: {
+      delete mode_.read_only_;
+      break;
+    }
+    case kReadWrite: {
+      delete mode_.read_write_;
+      break;
+    }
+    case MODE_NOT_SET: {
+      break;
+    }
+  }
+  _oneof_case_[0] = MODE_NOT_SET;
+}
+
+
+void TransactionOptions::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1beta1.TransactionOptions)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  clear_mode();
+  _internal_metadata_.Clear();
+}
+
+bool TransactionOptions::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!GOOGLE_PREDICT_TRUE(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:google.firestore.v1beta1.TransactionOptions)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoffNoLastTag(127u);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // .google.firestore.v1beta1.TransactionOptions.ReadOnly read_only = 2;
+      case 2: {
+        if (static_cast< ::google::protobuf::uint8>(tag) ==
+            static_cast< ::google::protobuf::uint8>(18u /* 18 & 0xFF */)) {
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessage(
+               input, mutable_read_only()));
+        } else {
+          goto handle_unusual;
+        }
+        break;
+      }
+
+      // .google.firestore.v1beta1.TransactionOptions.ReadWrite read_write = 3;
+      case 3: {
+        if (static_cast< ::google::protobuf::uint8>(tag) ==
+            static_cast< ::google::protobuf::uint8>(26u /* 26 & 0xFF */)) {
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessage(
+               input, mutable_read_write()));
+        } else {
+          goto handle_unusual;
+        }
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, _internal_metadata_.mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:google.firestore.v1beta1.TransactionOptions)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:google.firestore.v1beta1.TransactionOptions)
+  return false;
+#undef DO_
+}
+
+void TransactionOptions::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:google.firestore.v1beta1.TransactionOptions)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // .google.firestore.v1beta1.TransactionOptions.ReadOnly read_only = 2;
+  if (has_read_only()) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      2, *mode_.read_only_, output);
+  }
+
+  // .google.firestore.v1beta1.TransactionOptions.ReadWrite read_write = 3;
+  if (has_read_write()) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      3, *mode_.read_write_, output);
+  }
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()), output);
+  }
+  // @@protoc_insertion_point(serialize_end:google.firestore.v1beta1.TransactionOptions)
+}
+
+::google::protobuf::uint8* TransactionOptions::InternalSerializeWithCachedSizesToArray(
+    bool deterministic, ::google::protobuf::uint8* target) const {
+  (void)deterministic; // Unused
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1beta1.TransactionOptions)
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // .google.firestore.v1beta1.TransactionOptions.ReadOnly read_only = 2;
+  if (has_read_only()) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessageToArray(
+        2, *mode_.read_only_, deterministic, target);
+  }
+
+  // .google.firestore.v1beta1.TransactionOptions.ReadWrite read_write = 3;
+  if (has_read_write()) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessageToArray(
+        3, *mode_.read_write_, deterministic, target);
+  }
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1beta1.TransactionOptions)
+  return target;
+}
+
+size_t TransactionOptions::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1beta1.TransactionOptions)
+  size_t total_size = 0;
+
+  if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()));
+  }
+  switch (mode_case()) {
+    // .google.firestore.v1beta1.TransactionOptions.ReadOnly read_only = 2;
+    case kReadOnly: {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          *mode_.read_only_);
+      break;
+    }
+    // .google.firestore.v1beta1.TransactionOptions.ReadWrite read_write = 3;
+    case kReadWrite: {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          *mode_.read_write_);
+      break;
+    }
+    case MODE_NOT_SET: {
+      break;
+    }
+  }
+  int cached_size = ::google::protobuf::internal::ToCachedSize(total_size);
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = cached_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void TransactionOptions::MergeFrom(const ::google::protobuf::Message& from) {
+// @@protoc_insertion_point(generalized_merge_from_start:google.firestore.v1beta1.TransactionOptions)
+  GOOGLE_DCHECK_NE(&from, this);
+  const TransactionOptions* source =
+      ::google::protobuf::internal::DynamicCastToGenerated<const TransactionOptions>(
+          &from);
+  if (source == NULL) {
+  // @@protoc_insertion_point(generalized_merge_from_cast_fail:google.firestore.v1beta1.TransactionOptions)
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+  // @@protoc_insertion_point(generalized_merge_from_cast_success:google.firestore.v1beta1.TransactionOptions)
+    MergeFrom(*source);
+  }
+}
+
+void TransactionOptions::MergeFrom(const TransactionOptions& from) {
+// @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1beta1.TransactionOptions)
+  GOOGLE_DCHECK_NE(&from, this);
+  _internal_metadata_.MergeFrom(from._internal_metadata_);
+  ::google::protobuf::uint32 cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  switch (from.mode_case()) {
+    case kReadOnly: {
+      mutable_read_only()->::google::firestore::v1beta1::TransactionOptions_ReadOnly::MergeFrom(from.read_only());
+      break;
+    }
+    case kReadWrite: {
+      mutable_read_write()->::google::firestore::v1beta1::TransactionOptions_ReadWrite::MergeFrom(from.read_write());
+      break;
+    }
+    case MODE_NOT_SET: {
+      break;
+    }
+  }
+}
+
+void TransactionOptions::CopyFrom(const ::google::protobuf::Message& from) {
+// @@protoc_insertion_point(generalized_copy_from_start:google.firestore.v1beta1.TransactionOptions)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void TransactionOptions::CopyFrom(const TransactionOptions& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1beta1.TransactionOptions)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool TransactionOptions::IsInitialized() const {
+  return true;
+}
+
+void TransactionOptions::Swap(TransactionOptions* other) {
+  if (other == this) return;
+  InternalSwap(other);
+}
+void TransactionOptions::InternalSwap(TransactionOptions* other) {
+  using std::swap;
+  swap(mode_, other->mode_);
+  swap(_oneof_case_[0], other->_oneof_case_[0]);
+  _internal_metadata_.Swap(&other->_internal_metadata_);
+  swap(_cached_size_, other->_cached_size_);
+}
+
+::google::protobuf::Metadata TransactionOptions::GetMetadata() const {
+  protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::protobuf_AssignDescriptorsOnce();
+  return ::protobuf_google_2ffirestore_2fv1beta1_2fcommon_2eproto::file_level_metadata[kIndexInFileMessages];
+}
+
+
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace v1beta1
+}  // namespace firestore
+}  // namespace google
+
+// @@protoc_insertion_point(global_scope)