$httpBody
$httpBody : string
$httpBody : string
$code : string
$msg : string
$subCode : string
$subMsg : string
$tradeNo : string
$outTradeNo : string
$buyerLogonId : string
$fundChange : string
$refundFee : string
$refundCurrency : string
$gmtRefundPay : string
$refundDetailItemList : \Alipay\EasySDK\Payment\Common\Models\TradeFundBill[]
$storeName : string
$buyerUserId : string
$refundPresetPaytoolList : \Alipay\EasySDK\Payment\Common\Models\PresetPayToolInfo[]
$refundSettlementId : string
$presentRefundBuyerAmount : string
$presentRefundDiscountAmount : string
$presentRefundMdiscountAmount : string