TheAirline.Models.Airlines.Airline.GetInvoicesAmountMonth C# (CSharp) Method

        public double GetInvoicesAmountMonth(int year, int month, Invoice.InvoiceType type)
        {
            if (type == Invoice.InvoiceType.Total)
            {
                return Invoices.GetAmount(year, month);
            }
            return Invoices.GetAmount(type, year, month);
        }