code: public static AlipayTradeCancelResponse tradeCancelToResponse(AlipayTradeCancelModel model, String appAuthToken)
  			throws AlipayApiException {
  		AlipayTradeCancelRequest request = new AlipayTradeCancelRequest();
  		request.setBizModel(model);
  		AlipayTradeCancelResponse response = AliPayApiConfigKit.getAliPayApiConfig().getAlipayClient().execute(request,
  				null, appAuthToken);
  		return response;
  	}
docs: 统一收单交易撤销接口
  
  @param model
  {AlipayTradeCancelModel}
  @param appAuthToken
  应用授权token
  @return {AlipayTradeCancelResponse}
  @throws {AlipayApiException}