protected function _initScopes()
    {
        foreach ((array)$this->config('queryScope') as $className) {
            if (!empty($this->_queryScopes[$className])) {
                continue;
            }

            if (class_exists($className)) {
                $instance = new $className($this->_table);
                if ($instance instanceof QueryScopeInterface) {
                    $this->_queryScopes[$className] = $instance;
                }
            }
        }
    }