Ondrejnov\EET\SoapClient::getXML PHP Метод

    public function getXML($request)
    {
        $doc = new \DOMDocument('1.0');
        $doc->loadXML($request);
        $objWSSE = new WSSESoap($doc);
        $objWSSE->addTimestamp();
        $objKey = new XMLSecurityKey(XMLSecurityKey::RSA_SHA256, ['type' => 'private']);
        $objKey->loadKey($this->key, TRUE);
        $objWSSE->signSoapDoc($objKey, ["algorithm" => XMLSecurityDSig::SHA256]);
        $token = $objWSSE->addBinaryToken(file_get_contents($this->cert));
        $objWSSE->attachTokentoSig($token);
        return $objWSSE->saveXML();
    }