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

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

        // Required
        $node->appendChild($document->createElement('TariffCode', $this->getTariffCode()));

        // Optional
        if ($this->getDetailId() !== null) {
            $node->appendChild($document->createElement('DetailId', $this->getDetailId()));
        }
        if ($this->getSecondaryTariffCode() !== null) {
            $node->appendChild($document->createElement('SecondaryTariffCode', $this->getSecondaryTariffCode()));
        }
        if ($this->getSecondaryDetailId() !== null) {
            $node->appendChild($document->createElement('SecondaryDetailId', $this->getSecondaryDetailId()));
        }

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

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

        // Required
        $node->appendChild($document->createElement('TariffCode', $this->getTariffCode()));

        // Optional
        if ($this->getDetailId() !== null) {
            $node->appendChild($document->createElement('DetailId', $this->getDetailId()));
        }
        if ($this->getSecondaryTariffCode() !== null) {
            $node->appendChild($document->createElement('SecondaryTariffCode', $this->getSecondaryTariffCode()));
        }
        if ($this->getSecondaryDetailId() !== null) {
            $node->appendChild($document->createElement('SecondaryDetailId', $this->getSecondaryDetailId()));
        }

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

@return DOMElement