Gpf_Net_Http_Request::setBody PHP Method

        public function setBody($body)
        {
            $this->body = $body;
        }

 protected function sendRequest($requestBody)
 {
     $request = new Gpf_Net_Http_Request();
     $request->setMethod('POST');
     $request->setBody(Gpf_Rpc_Server::BODY_DATA_NAME . '=' . urlencode($requestBody));
     $request->setUrl($this->url);
     $client = new Gpf_Net_Http_Client();
     $response = $client->execute($request);
     return $response->getBody();
 }