function refundHistoryOf(
uint256 refundId
) public view returns (RefundHistory memory) {
return _refundHistoryList[refundId];
}
struct RefundHistory {
uint256 refundId; // 환불한 ID
uint256 refundTime; // 환불 시각
uint256 refundedItemPrice; // 환불한 아이템 가격 (wei)
uint256 purchaseId; // 환불한 Purchase ID
address buyer; // 구매자 EOA
string uuid; // 구매자 UUID
string itemId; // 환불한 Item ID
}