|  | // Protocol Buffers - Google's data interchange format | 
|  | // Copyright 2008 Google Inc.  All rights reserved. | 
|  | // | 
|  | // Use of this source code is governed by a BSD-style | 
|  | // license that can be found in the LICENSE file or at | 
|  | // https://developers.google.com/open-source/licenses/bsd | 
|  |  | 
|  | #import <Foundation/Foundation.h> | 
|  |  | 
|  | #import "GPBCodedOutputStream.h" | 
|  | #import "GPBDescriptor.h" | 
|  |  | 
|  | size_t GPBComputeExtensionSerializedSizeIncludingTag( | 
|  | GPBExtensionDescriptor* extension, id value); | 
|  |  | 
|  | void GPBWriteExtensionValueToOutputStream(GPBExtensionDescriptor* extension, | 
|  | id value, | 
|  | GPBCodedOutputStream* output); |