public function render()
{
// Create XML writer
$objWriter = new XMLWriter(XMLWriter::STORAGE_MEMORY);
// XML header
$objWriter->startDocument('1.0', 'UTF-8', 'yes');
// Properties
$objWriter->startElement('Properties');
$objWriter->writeAttribute('xmlns', 'http://schemas.openxmlformats.org/officeDocument/2006/custom-properties');
$objWriter->writeAttribute('xmlns:vt', 'http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes');
if ($this->getPresentation()->getPresentationProperties()->isMarkedAsFinal()) {
// property
$objWriter->startElement('property');
$objWriter->writeAttribute('fmtid', '{D5CDD505-2E9C-101B-9397-08002B2CF9AE}');
$objWriter->writeAttribute('pid', 2);
$objWriter->writeAttribute('name', '_MarkAsFinal');
// property > vt:bool
$objWriter->writeElement('vt:bool', 'true');
// > property
$objWriter->endElement();
}
// > Properties
$objWriter->endElement();
$this->oZip->addFromString('docProps/custom.xml', $objWriter->getData());
// Return
return $this->oZip;
}