protected object Add(TEntity entity, PrimaryKey pk)
        {
            object result = null;

            try
            {
                if (!dbc.IsOpen)
                {
                    dbc.Open();
                }

                logger.LogInformation($"Add complete for {typeof(TEntity)} entity.");
                result = dbc.Add <TEntity>(entity, pk);
            }
            catch (Exception ex)
            {
                logger.LogError(ex.Message);
                return(null);
            }

            return(result);
        }