/// <summary>
 /// Finds the matching (by time only) segment in our list and initialises it with timeSegment
 /// </summary>
 /// <param name="timeSegment"></param>
 public void InitialiseTimeSegment(TimeSegment timeSegment)
 {
     var existingActivity = activities.Where(x => x.StartOfTimeSegment.TimeOfDay == timeSegment.StartOfTimeSegment.TimeOfDay).FirstOrDefault();
     if (existingActivity != null)
     {
         //existingActivity.what?
     }
 }
 public void InitialiseFromTimeSegment(TimeSegment segment)
 {
 }