QLNet.IMM.code C# (CSharp) Метод

        public static string code(Date immDate)
        {
            if (!isIMMdate(immDate, false)) throw new ArgumentException(immDate + " is not an IMM date");
            return "FGHJKMNQUVXZ"[immDate.Month-1] + (immDate.Year % 10).ToString();
        }