public function addDnsbeExtension($language)
{
$this->addExtension('xmlns:dnsbe', 'http://www.dns.be/xml/epp/dnsbe-1.0');
$ext = $this->createElement('extension');
$dnsbeext = $this->createElement('dnsbe:ext');
$update = $this->createElement('dnsbe:update');
$contact = $this->createElement('dnsbe:contact');
$change = $this->createElement('dnsbe:chg');
$change->appendChild($this->createElement('dnsbe:lang', $language));
$contact->appendChild($change);
$update->appendChild($contact);
$dnsbeext->appendChild($update);
$ext->appendChild($dnsbeext);
$this->getCommand()->appendChild($ext);
}