public function sendRequest()
    {
        $curlInit = curl_init();
        curl_setopt($curlInit, CURLOPT_URL, $this->getGoogleSitemapToolUrl());
        curl_setopt($curlInit, CURLOPT_HEADER, true);
        curl_setopt($curlInit, CURLOPT_NOBODY, true);
        curl_setopt($curlInit, CURLOPT_RETURNTRANSFER, true);
        curl_exec($curlInit);
        $httpCode = curl_getinfo($curlInit, CURLINFO_HTTP_CODE);
        curl_close($curlInit);

        return $httpCode;
    }