private function getOAuthEcho() {
        $url     = 'https://api.twitter.com/1.1/account/verify_credentials.json';
        $params  = array();
        $headers = $this->getAuthorization($url, 'GET', $params, 0);
        return array(
            'X-Auth-Service-Provider: ' . $url,
            'X-Verify-Credentials-Authorization: OAuth realm="http://api.twitter.com/", ' . substr($headers[0], 21),
        );
    }