protected function grid()
{
return Admin::grid(Administrator::class, function (Grid $grid) {
$grid->id('ID')->sortable();
$grid->username(trans('admin::lang.username'));
$grid->name(trans('admin::lang.name'));
$grid->created_at(trans('admin::lang.created_at'));
$grid->updated_at(trans('admin::lang.updated_at'));
});
}