如何使用Endroid \ QR Code设置QR版本

I am generating QR code with Endroid\QRCode library. Everything works fine, but library output QR version 10, which is not good for me. How can set it to output QR version 15?

https://github.com/endroid/qr-code-bundle

$content = "Demo QR code";
$qrCode = new QrCode($content);
$qrCode->setSize(600);
$qrCode->setErrorCorrectionLevel(new ErrorCorrectionLevel(ErrorCorrectionLevel::MEDIUM));
$qrCode->setEncoding('ISO-8859-2');

$dir = $this->getParameter('qr_directory');
$filename = 'order-'.$order->getId().'.png';
$qrCode->writeFile($dir.$filename);

I expect the output version will be 15, but actual output is 10.