code: public function render(Request $request , Response $response){
  	    if(!$this->environment->isSilent()){
              header('HTTP/1.1 '.$response->getStatusCode().' '.$response->getStatusMessage());
              foreach($response->getHeaders() as $name=>$value){
                  header($name.': '.$value);
              }
          }
  
  		echo $this->createTemplate($response);
  	}
docs: {@inheritdoc}