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();
}
