private static function AttachMoreParams($url, array $oblParams, array $params)
    {
        $moreParams = array();
        foreach ($params as $key => $value) {
            if (!in_array($key, $oblParams)) {
                $moreParams[$key] = $value;
            }
        }
        if (count($moreParams)) {
            $url .= '?' . http_build_query($moreParams, null, '&');
        }
        return $url;
    }