tests/headers/objc_protocol.h - third_party/github.com/rust-lang/rust-bindgen - Git at Google

 // bindgen-flags: --objc-extern-crate -- -x objective-c
 // bindgen-osx-only

 @protocol Foo
 @end

 @interface Foo <Foo>
 @end
	// bindgen-flags: --objc-extern-crate -- -x objective-c
	// bindgen-osx-only

	@protocol Foo
	@end

	@interface Foo <Foo>
	@end