1 @interface Base { 2 int my_var; 3 } 4 -(int) my_var; 5 -(void) my_method: (int)param; 6 +(void) my_method: (int)param; 7 @end 8 9 @interface Sub : Base 10 -(void) my_method: (int)param; 11 @end 12