1*67e74705SXin Li 2*67e74705SXin Li @interface I 3*67e74705SXin Li 4*67e74705SXin Li -(void)mm:(void (^)(I*))block; 5*67e74705SXin Li -(void)mm2:(I*)i; 6*67e74705SXin Li 7*67e74705SXin Li @end 8