public SendTransactionResponse sendTransaction(SendTransactionParameter parameter)
        {
            SendTransactionRequest request = new SendTransactionRequest();

            request.Transaction   = ByteString.CopyFromUtf8(parameter.transaction);
            request.AllowHighFees = parameter.allow_high_fees;
            request.BypassLimits  = parameter.bypass_limits;
            return(coreClient.sendTransaction(request));
        }