fkooman / php-remote-storage

            $request->getHeader('If-None-Match', false, null)

        );

        if (null !== $requestedVersion) {

            if (in_array($folderVersion, $requestedVersion)) {

                //return new RemoteStorageResponse($request, 304, $folderVersion);

                $response = new Response(304, 'application/ld+json');

                $response->addHeader('ETag', '"'.$folderVersion.'"');

                return $response;

            }

        }

        $rsr = new Response(200, 'application/ld+json');

        $rsr->addHeader('ETag', '"'.$folderVersion.'"');

        );

        $documentContentType = $this->remoteStorage->getContentType($path);

        if (null !== $requestedVersion) {

            if (in_array($documentVersion, $requestedVersion)) {

                $response = new Response(304, $documentContentType);

                $response->addHeader('ETag', '"'.$documentVersion.'"');

                return $response;

            }

        }

        $rsr = new Response(200, $documentContentType);

        $rsr->addHeader('ETag', '"'.$documentVersion.'"');