public IEnumerable<MSI_Port_InterestTrans> GetInterestTransactions(string portfolioNumber, bool isOriginal, string userId = "")
        {
            string thisMethod = string.Format("{0}.{1}", thisClass, System.Reflection.MethodBase.GetCurrentMethod().Name);
            string logMessage = string.Format("{0}|Method incoming parameters portfolioNumber={1}, userId={2}", thisMethod, portfolioNumber, userId);
            LogHelper.Info(logMessage);

            IEnumerable<MSI_Port_InterestTrans> transactions = null;

            try
            {
                DataQueries query = new DataQueries();
                transactions = query.GetPortfolioInterestSummary(portfolioNumber, userId, isOriginal);
            }
            catch (Exception ex)
            {
                ErrorLogHelper.Error(logMessage, ex);
            }
            return transactions;
        }