// class Destination {
//   final String amount;
//   final String address;
//   final String assetId;

//   Destination({required this.amount, required this.address, required this.assetId});

//   Map<String, dynamic> toJson() => {
//     "amount": amount,
//     "address": address,
//     "asset_id": assetId,
//   };
// }

// class TransferParams {
//   final List<Destination> destinations;
//   final int fee;
//   final int mixin;
//   final String paymentId;
//   final String comment;
//   final bool pushPayer;
//   final bool hideReceiver;

//   TransferParams({required this.destinations, required this.fee, required this.mixin, required this.paymentId, required this.comment, required this.pushPayer, required this.hideReceiver});

//   Map<String, dynamic> toJson() => {
//     "destinations": destinations,
//     "fee": fee,
//     "mixin": mixin,
//     "payment_id": paymentId,
//     "comment": comment,
//     "push_payer": pushPayer,
//     "hide_receiver": hideReceiver,
//   };
// }

// class GetRecentTxsAndInfoParams {
//   final int offset;
//   final int count;
//   final bool updateProvisionInfo;

//   GetRecentTxsAndInfoParams({required this.offset, required this.count, required this.updateProvisionInfo});

//   Map<String, dynamic> toJson() => {
//     "offset": offset,
//     "count": count,
//     "update_provision_info": updateProvisionInfo,
//   };
// }