/* * Copyright (c) 2014-present, Facebook, Inc. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. */ #import @protocol Foo - (void)fooMethod; @property(retain) NSString* foo; @end @interface Bla : NSObject - (void)fooMethod; @end @implementation Bla : NSObject - (void)fooMethod { if ([self conformsToProtocol:@protocol(Foo)]) { return; } } @end