public DailyFrequencyInterval(int intervalTime, DailyFrequencyIntervalTimeType intervalTimeType, DateTime startingTime, DateTime endingTime)
 {
     IntervalType     = DailyFrequencyIntervalType.OccursEvery;
     IntervalTime     = intervalTime;
     IntervalTimeType = intervalTimeType;
     StartTime        = startingTime;
     EndTime          = endingTime;
 }
 public DailyFrequencyInterval(DateTime occursAt)
 {
     IntervalType = DailyFrequencyIntervalType.OccursOnce;
     OccursAt     = occursAt;
 }