how to convert .docx to .pdf [PHPword]

gistfile1.txt

$rendererLibraryPath = PHPWORD_BASE_DIR . '/vendor/dompdf/dompdf';
\PhpOffice\PhpWord\Settings::setPdfRendererPath($rendererLibraryPath);
\PhpOffice\PhpWord\Settings::setPdfRendererName('DomPDF');

$phpWord = new \PhpOffice\PhpWord\PhpWord();

//Load temp file
$phpWord = \PhpOffice\PhpWord\IOFactory::load('.docx');

//Save it
$xmlWriter = \PhpOffice\PhpWord\IOFactory::createWriter($phpWord , 'PDF');
$xmlWriter->save('xx.pdf');

$xmlWriter = \PhpOffice\PhpWord\IOFactory::createWriter($phpWord , 'HTML');
$xmlWriter->save('xx.html');