/**
* fetchPdf - fetch rendered document as a string
*
* @param Response $response \Xoops\Core\Service\Response object
*
* @return void - response->value set to string containing document
*/
public function fetchPdf($response)
{
$this->initPdf();
$this->pdfEngine->lastPage();
$response->seValue($this->pdfEngine->Output('', 'S'));
}