1 files changed, 42 insertions, 0 deletions
diff --git a/Firebase/Auth/Source/FIRAuthCredential.m b/Firebase/Auth/Source/FIRAuthCredential.m
new file mode 100644
index 0000000..d476d6d
--- /dev/null
+++ b/Firebase/Auth/Source/FIRAuthCredential.m
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2017 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.
+ */
+
+#import "Private/FIRAuthCredential_Internal.h"
+
+@implementation FIRAuthCredential
+
+- (instancetype)init {
+  @throw [NSException exceptionWithName:@"Attempt to call unavailable initializer."
+                                 reason:@"This class is an abstract base class. It's init method "
+                                        "should not be called directly."
+                               userInfo:nil];
+}
+
+- (nullable instancetype)initWithProvider:(NSString *)provider {
+  self = [super init];
+  if (self) {
+    _provider = [provider copy];
+  }
+  return self;
+}
+
+- (void)prepareVerifyAssertionRequest:(FIRVerifyAssertionRequest *)request {
+  @throw [NSException exceptionWithName:@"Attempt to call virtual method."
+                                 reason:@"This method must be overridden by a subclass."
+                               userInfo:nil];
+}
+
+@end