node_modules/uncrustify/tests/output/oc/50005-Declarations.h

@interface EmptyClass : NSObject
-(void)aMessage: (id) arg;
@end

@interface EmptyClass : NSObject {}
-(void)aMessage: (id) arg;
@end

@interface NSObject (ObjectAdditions)
-(void)aMessage: (id) arg;
@end

@protocol TestProtocol
-(void)aMessage: (id) arg;
@end

@interface TestClass : NSObject<TestProtocol> {
}
-(void)aMessage: (id) arg;
@end