private static function _callDispatcher($dispatcherCallback) {
        $dispatcherCallback = $dispatcherCallback[0] !== '\\' ? __NAMESPACE__ . '\\' . $dispatcherCallback : $dispatcherCallback;

        if (!is_callable($dispatcherCallback)) {
            throw new \Exception('Routing dispacher [' . $dispatcherCallback . '] cannot be called.', 500);
        }

        return call_user_func_array($dispatcherCallback, [
            self::$_uri, self::$_config
        ]);
    }