1*0a6a1f1dSLionel Sambuc @interface A 2*0a6a1f1dSLionel Sambuc -(void)method1; 3*0a6a1f1dSLionel Sambuc @end 4*0a6a1f1dSLionel Sambuc @interface B 5*0a6a1f1dSLionel Sambuc -(void)method1 __attribute__((unavailable)); 6*0a6a1f1dSLionel Sambuc @end 7