code: func MenuItemNewFromModel(model *MenuModel, index int) *MenuItem {
  	c := C.g_menu_item_new_from_model(model.native(), C.gint(index))
  	if c == nil {
  		return nil
  	}
  	return wrapMenuItem(wrapObject(unsafe.Pointer(c)))
  }
docs: // MenuItemNewFromModel is a wrapper around g_menu_item_new_from_model().