public async Task <string> PublishAsync(string subject, T data)
        {
            // init
            data.TransactionInfo.TransactionId = AddTransaction(subject, data);

            // update
            AddPayloadAndHistory(subject, data, data.TransactionInfo.TransactionId);

            return(await _obs.PublishAsync(subject, data));
        }
        public async Task <string> PublishAsync(string subject, T data)
        {
            try
            {
                _log.Trace(new { direction = "Publisher", subject = subject, data = data });

                return(await _obs.PublishAsync(subject, data));
            }
            catch (Exception e)
            {
                _log.Error(e, e.Message, data);
                throw;
            }
        }