@@ -3079,6 +3079,8 @@ mrb_init_class(mrb_state *mrb)
30793079mrb_define_method_id(mrb, mod, MRB_OPSYM(eqq), mrb_mod_eqq, MRB_ARGS_REQ(1)); /* 15.2.2.4.7 */
30803080mrb_define_method_id(mrb, mod, MRB_SYM(dup), mrb_mod_dup, MRB_ARGS_NONE());
30813081mrb_define_private_method_id(mrb, mod, MRB_SYM(method_added), mrb_do_nothing, MRB_ARGS_REQ(1));
3082+mrb_define_private_method_id(mrb, mod, MRB_SYM(method_removed), mrb_do_nothing, MRB_ARGS_REQ(1));
3083+mrb_define_private_method_id(mrb, mod, MRB_SYM(method_undefined), mrb_do_nothing, MRB_ARGS_REQ(1));
3082308430833085mrb_undef_method_id(mrb, cls, MRB_SYM(append_features));
30843086mrb_undef_method_id(mrb, cls, MRB_SYM(prepend_features));