mrb_module_get_under_id(mrb_state *mrb, struct RClass *outer, mrb_sym name)
{
  return module_from_sym(mrb, outer, name);
}
mrb_module_get_under_id(mrb_state *mrb, struct RClass *outer, mrb_sym name)
{
  return module_from_sym(mrb, outer, name);
}