protected static function getUrlParameterNamesToExcludeFromUrl()
    {
        $paramsToExclude = Config::getInstance()->Tracker['url_query_parameter_to_exclude_from_url'];
        $paramsToExclude = explode(",", $paramsToExclude);
        $paramsToExclude = array_map('trim', $paramsToExclude);
        return $paramsToExclude;
    }