Gpf_Http::getUserAgent PHP Method

        public static function getUserAgent()
        {
            $userAgent = '';
            if (isset($_SERVER['HTTP_USER_AGENT'])) {
                $userAgent .= $_SERVER['HTTP_USER_AGENT'];
            }
            if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
                $userAgent .= ' - ' . $_SERVER['HTTP_ACCEPT_LANGUAGE'];
            }
            return $userAgent;
        }

 protected function getUserAgent()
 {
     return Gpf_Http::getUserAgent();
 }