set_method_visibility 1629 vm_method.c    	set_method_visibility(module, argc, argv, visi);
set_method_visibility 1710 vm_method.c        set_method_visibility(rb_singleton_class(obj), argc, argv, METHOD_VISI_PUBLIC);
set_method_visibility 1736 vm_method.c        set_method_visibility(rb_singleton_class(obj), argc, argv, METHOD_VISI_PRIVATE);
set_method_visibility 1831 vm_method.c        set_method_visibility(module, argc, argv, METHOD_VISI_PRIVATE);