159      * @param FacebookRequest $request
163     public function prepareRequestMessage(FacebookRequest $request)  argument
165         $postToVideoUrl = $request->containsVideoUploads();
166         $url = $this->getBaseGraphUrl($postToVideoUrl) . $request->getUrl();
169         if ($request->containsFileUploads()) {
170             $requestBody = $request->getMultipartBody();
171             $request->setHeaders([
175             $requestBody = $request->getUrlEncodedBody();
176             $request->setHeaders([
183             $request->getMethod(),
184             $request->getHeaders(),
192      * @param FacebookRequest $request
198     public function sendRequest(FacebookRequest $request)  argument
200         if (get_class($request) === 'Facebook\FacebookRequest') {
201             $request->validateAccessToken();
204         list($url, $method, $headers, $body) = $this->prepareRequestMessage($request);
208         if ($request->containsFileUploads()) {
210         } elseif ($request->containsVideoUploads()) {
221             $request,
237      * @param FacebookBatchRequest $request
243     public function sendBatchRequest(FacebookBatchRequest $request)  argument
245         $request->prepareRequestsForBatch();
246         $facebookResponse = $this->sendRequest($request);
248         return new FacebookBatchResponse($request, $facebookResponse);