public static function getSearchResultsTotal($url = false)
    {
        $url = parent::getUrl($url);
        $url = sprintf(Config\Services::GOOGLE_APISEARCH_URL, 1, $url);

        $ret = static::_getPage($url);

        $obj = Helper\Json::decode($ret);
        return !isset($obj->responseData->cursor->estimatedResultCount)
               ? parent::noDataDefaultValue()
               : intval($obj->responseData->cursor->estimatedResultCount);
    }