public Result <TxFeeForSend> EstimateRawTransaction(List <SendRawTransactionInputsIM> senders, IEnumerable <SendItemInfo> sendManyModels, string changeAddress, long feeRate) { List <SendRawTransactionOutputsIM> receivers = new List <SendRawTransactionOutputsIM>(); sendManyModels.ToList().ForEach(x => { SendRawTransactionOutputsIM receiver = new SendRawTransactionOutputsIM { Address = x.Address, Amount = x.Amount }; receivers.Add(receiver); }); ApiResponse response = TransactionApi.EstimateRawTransaction(senders.ToArray(), receivers.ToArray(), changeAddress, feeRate).Result; return(base.GetResult <TxFeeForSend>(response)); }