public static Expense ToModel(this IExpenseEntity entity)
        {
            var expense = new Expense
            {
                Id                  = new StorageKey(KeyGenerator.ExpenseEntitySuffix(entity.RowKey)).InvertedTicks,
                Approved            = entity.Approved.HasValue ? entity.Approved.Value : false,
                CostCenter          = entity.CostCenter,
                Date                = entity.Date.HasValue ? entity.Date.Value : DateTime.UtcNow,
                ReimbursementMethod = (ReimbursementMethod)Enum.Parse(typeof(ReimbursementMethod), entity.ReimbursementMethod),
                Title               = entity.Title,
                UserName            = entity.PartitionKey.DecodePartitionAndRowKey(),
                ApproverName        = entity.ApproverName
            };

            return(expense);
        }