public function refresh($siteId = null)
    {
        // @sorry for this, but Drupal 8 does not handle prefixes
        //   and we don't have a fallback for tags yet in sf_dic
        if ($siteId) {
            cache_clear_all('alias#master#', 'cache', true);
            cache_clear_all('alias#' . $siteId . '#', 'cache', true);
        } else {
            cache_clear_all('alias#', 'cache', true);
        }
    }