class Interval:
    class Type:
        One_Day = 'P1D',
        One_Week = 'P1W',
        One_Month = 'P1M',
        Three_Months = 'P3M',
        Six_Months = 'P6M',
        One_Year = 'P1Y',
        Three_Years = 'P3Y',
        Five_Years = 'P5Y',
        Max = 'P50Y'
