validation-test/Serialization/Inputs/serialization_loops.h - third_party/swift - Git at Google

 @import Foundation;

 typedef NS_ENUM(NSUInteger, FooKind) {
   FooKindA
 };

 @protocol BaseProto
 @property FooKind kind;
 @end

 @interface Base : NSObject <BaseProto>
 @end
	@import Foundation;

	typedef NS_ENUM(NSUInteger, FooKind) {
	FooKindA
	};

	@protocol BaseProto
	@property FooKind kind;
	@end

	@interface Base : NSObject <BaseProto>
	@end