$options = new Options();
$options->set('defaultFont', 'Roboto');


$dompdf = new Dompdf($options);

$data = array(
  'headline' => 'my headline'
);
$html = $this->renderView('pdf/pdf.html.twig', [
    'headline' => "Test pdf generator"
]);


$dompdf->loadHtml($html);
$dompdf->setPaper('A4', 'portrait');
$dompdf->render();
$dompdf->stream("testpdf.pdf", [
    "Attachment" => true
]);