public static function onlyTrash()
    {
        $class = get_called_class();
        $object = new $class();
        $table = $object->_table;
        $key = $object->_keyName;
        //
        $data = Query::table($table)->select('*');
        //
        if ($object->_canKept) {
            $data = $data->where('deleted_at', '<=', Time::current());
        }
        //
        $data = $data->get(Query::GET_ARRAY);
        //
        return self::collect($data, $table, $key);
    }