public function toNode(DOMDocument $document = null)
    {
        if (null === $document) {
            $document = new DOMDocument();
        }

        $node = $document->createElement('UPSFiled');

        $poa = $this->getPOA();
        if (isset($poa)) {
            $node->appendChild($poa->toNode($document));
        }

        return $node;
    }
public function toNode(DOMDocument $document = null)
    {
        if (null === $document) {
            $document = new DOMDocument();
        }

        $node = $document->createElement('UPSFiled');

        $poa = $this->getPOA();
        if (isset($poa)) {
            $node->appendChild($poa->toNode($document));
        }

        return $node;
    }
@param null|DOMDocument $document

@return DOMElement