protected function cancel() { $request = new AopTradeCancelRequest($this->httpClient, $this->httpRequest); $request->initialize($this->parameters->all()); $request->setEndpoint($this->getEndpoint()); $request->setPrivateKey($this->getPrivateKey()); $request->setBizContent(['out_trade_no' => $this->getBizData('out_trade_no')]); $this->response = $request->send(); }