public int GetTotalDurationWithoutChildrenInMinForMonth(DateTime month)
 {
     return DirectTrackedTimeRows.Where(x => x.RecordDate.Year == month.Year && x.RecordDate.Month == month.Month)
                                 .Sum(x => (int)x.DurationInSeconds / 60);
 }
 internal bool ContainsMember(string member)
 {
     return DirectTrackedTimeRows.Any(x => x.TeamMember == member) || Childs.Any(x => x.ContainsMember(member));
 }