public function getPDFResponse($template, $variables = [], $params = [])
{
$markup = $this->getPDFMarkup($template, $variables, $params);
$response = new \Zend\Http\Response();
$response->setContent($markup);
$headers = new \Zend\Http\Headers();
$filename = isset($params['fileName']) ? 'filename=' . $params['fileName'] . '.pdf' : 'filename=' . $this->defaultFileName;
$headers->addHeaders(['Content-Type' => 'application/pdf', 'Content-Disposition' => 'inline; ' . $filename . '', 'Content-Transfer-Encoding' => 'binary', 'Content-Length' => strlen($markup), 'Accept-Ranges' => 'bytes']);
$response->setHeaders($headers);
return $response;
}