public void CreateDesk(DeskEntity desk)
 {
     if (IsDeskExists(desk.Name))
     {
         throw new DeskLogicException(string.Format("Desk {0} already exists", desk.Name));
     }
     _desks.Add(desk);
 }
 public void DeleteDesk(DeskEntity desk)
 {
     _desks.Remove(desk);
 }
 public void UpdateDesk(DeskEntity desk)
 {
     // do nothing
 }