public function getServerTransactionId()
{
$xpath = $this->xPath();
$result = $xpath->query('/epp:epp/epp:response/epp:trID/epp:svTRID');
if (is_object($result) && $result->length > 0) {
return $result->item(0)->nodeValue;
} else {
$result = $xpath->query('/epp:epp/epp:response/epp:trID/epp:svTRID');
if (is_object($result) && $result->length > 0) {
return $result->item(0)->nodeValue;
} else {
return null;
}
}
}