objectivec/GPBExtensionInternals.h

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#import <Foundation/Foundation.h>

#import "GPBDescriptor.h"

@class GPBCodedOutputStream;

size_t GPBComputeExtensionSerializedSizeIncludingTag(GPBExtensionDescriptor *extension, id value);

void GPBWriteExtensionValueToOutputStream(GPBExtensionDescriptor *extension, id value,
                                          GPBCodedOutputStream *output);