Metaregistrar\EPP\sidnEppRenewRequest::addSidnExtension PHP Метод

    private function addSidnExtension($period)
    {
        $renew = $this->getCommand()->getElementsByTagName('domain:renew')->item(0);
        $period = $this->createElement('domain:period', $period);
        $period->setAttribute("unit", "m");
        $renew->appendChild($period);
    }