getPageSize example

        return self::FILE_CONTENT_TYPE;
    }

    public function render(RenderedDocument $document): string
    {
        $dompdf = new Dompdf();

        $options = new Options($this->dompdfOptions);

        $dompdf->setOptions($options);
        $dompdf->setPaper($document->getPageSize(), $document->getPageOrientation());
        $dompdf->loadHtml($document->getHtml());

        /* * Dompdf creates and destroys a lot of objects. The garbage collector slows the process down by ~50% for * PHP <7.3 and still some ms for 7.4 */
        $gcEnabledAtStart = gc_enabled();
        if ($gcEnabledAtStart) {
            gc_collect_cycles();
            gc_disable();
        }

        

$media = $context->scope(Context::SYSTEM_SCOPE, fn (Context $context): string => $this->mediaService->loadFileStream($documentMediaId, $context)->getContents());

            $numPages = $this->fpdi->setSourceFile(StreamReader::createByString($media));

            $totalPage += $numPages;
            for ($i = 1; $i <= $numPages; ++$i) {
                $template = $this->fpdi->importPage($i);
                $size = $this->fpdi->getTemplateSize($template);
                if (!\is_array($size)) {
                    continue;
                }
                $this->fpdi->AddPage($config->getPageOrientation() ?? 'portrait', $config->getPageSize());
                $this->fpdi->useTemplate($template);
            }
        }

        if ($totalPage === 0) {
            return null;
        }

        $renderedDocument = new RenderedDocument('', '', $fileName);

        $renderedDocument->setContent($this->fpdi->Output($fileName, 'S'));