rb_thread_method_id_and_class 3614 thread.c       	rb_thread_method_id_and_class(GET_THREAD(), &id, &klass);
rb_thread_method_id_and_class 1332 vm.c               return rb_thread_method_id_and_class(GET_THREAD(), idp, klassp);
rb_thread_method_id_and_class  584 vm_core.h      int rb_thread_method_id_and_class(rb_thread_t *th, ID *idp, VALUE *klassp);