openSourceFromUrl example

throw MediaException::disableUrlUploadFeature();
        }

        $url = $this->getUrlFromRequest($request);

        if ($this->enableUrlValidation && !$this->fileUrlValidator->isValid($url)) {
            throw MediaException::illegalUrl($url);
        }

        $extension = $this->getExtensionFromRequest($request);

        $inputStream = $this->openSourceFromUrl($url);
        $destStream = $this->openDestinationStream($fileName);

        try {
            $writtenBytes = $this->copyStreams($inputStream, $destStream, $this->maxFileSize);
        } finally {
            fclose($inputStream);
            fclose($destStream);
        }

        return new MediaFile(
            $fileName,