function __construct($objectname, $addinfo = null, $removeinfo = null, $updateinfo = null, $language = 'en')
{
if ($updateinfo instanceof eppContact) {
parent::__construct($objectname, $addinfo, $removeinfo, $updateinfo);
$this->addDnsbeExtension($language);
} else {
throw new eppException('DNSBE needs $updateinfo to be an eppContact for this update request');
}
$this->addSessionId();
}