76   GPBExtensionDescriptor *autocreatorExtension_;
114                            GPBExtensionDescriptor *extension) {
132   for (GPBExtensionDescriptor *extension in extensionMap) {
614     Class msgClass, GPBMessage *autocreator, GPBExtensionDescriptor *extension)
619     GPBExtensionDescriptor *extension) {
1133       enumerateKeysAndObjectsUsingBlock:^(GPBExtensionDescriptor *extension,
1694 - (id)getExtension:(GPBExtensionDescriptor *)extension {  argument
1733 - (id)getExistingExtension:(GPBExtensionDescriptor *)extension {  argument
1738 - (BOOL)hasExtension:(GPBExtensionDescriptor *)extension {  argument
1755   for (GPBExtensionDescriptor *extension in sortedExtensions) {
1769 - (void)setExtension:(GPBExtensionDescriptor *)extension value:(id)value {  argument
1793   GPBExtensionDescriptor *descriptor = extension;
1808 - (void)addExtension:(GPBExtensionDescriptor *)extension value:(id)value {  argument
1829 - (void)setExtension:(GPBExtensionDescriptor *)extension
1849 - (void)clearExtension:(GPBExtensionDescriptor *)extension {  argument
1958   GPBExtensionDescriptor *extension = nil;
2008   GPBExtensionDescriptor *extension =
2510     for (GPBExtensionDescriptor *extension in other->extensionMap_) {
2954   for (GPBExtensionDescriptor *extension in extensionMap_) {