public TDay DayEndsOrdinal(Period period, TDate?dateEnds)
 {
     return(OperationsPeriod.DateEndsInPeriod(period, dateEnds));
 }
 public TDay DateStopInPeriod(Period period, TDate?dateStop)
 {
     return(OperationsPeriod.DateEndsInPeriod(period, dateStop));
 }