public function submitFeed($FeedType, $FeedContent)
 {
     $this->initAPI();
     // init stream ressource
     $feedHandle = @fopen('php://memory', 'rw+');
     fwrite($feedHandle, $FeedContent);
     rewind($feedHandle);
     $marketplaceIdArray = array("Id" => array($this->MarketplaceId));
     $request = new MarketplaceWebService_Model_SubmitFeedRequest();
     $request->setSellerId($this->SellerId);
     $request->setMarketplaceIdList($marketplaceIdArray);
     $request->setPurgeAndReplace(false);
     $request->setFeedType($FeedType);
     $request->setFeedContent($feedHandle);
     rewind($feedHandle);
     $request->setContentMd5(base64_encode(md5(stream_get_contents($feedHandle), true)));
     rewind($feedHandle);
     $result = $this->invokeSubmitFeed($this->service, $request);
     @fclose($feedHandle);
     return $result;
 }