id_core_define_singleton_method 5715 compile.c      	ADD_SEND (ret, line, id_core_define_singleton_method, INT2FIX(3));
id_core_define_singleton_method  124 id.c               REGISTER_SYMID(id_core_define_singleton_method, "core#define_singleton_method");
id_core_define_singleton_method 2687 vm.c               rb_define_method_id(klass, id_core_define_singleton_method, m_core_define_singleton_method, 3);