PhpSigep\Pdf\CartaoDePostagem2016::render PHP Метод

    public function render($dest = '', $filename = '')
    {
        $cacheKey = md5(serialize($this->plp) . $this->idPlpCorreios . get_class($this));
        if ($pdfContent = Bootstrap::getConfig()->getCacheInstance()->getItem($cacheKey)) {
            header('Content-Type: application/pdf');
            header('Content-Disposition: inline; filename="doc.pdf"');
            header('Cache-Control: private, max-age=0, must-revalidate');
            header('Pragma: public');
            echo $pdfContent;
        } else {
            if ($dest == 'S') {
                return $this->_render($dest, $filename);
            } else {
                $this->_render($dest, $filename);
                Bootstrap::getConfig()->getCacheInstance()->setItem($cacheKey, $this->pdf->buffer);
            }
        }
    }