public void Cancel()
{
IsCancelledOrArchived();
IsNotScheduled();
foreach (var bookedSlot in _slots.GetBookedSlots())
{
Raise(new SlotBookingCancelled(Id, bookedSlot.Id, null));
}
var events = _slots
.All()
.Select(slot => new SlotScheduleCancelled(Id, slot.Id))
.ToList();
events.ForEach(Raise);
Raise(new DayScheduleCancelled(Id));
}
