/// <summary>
 /// Clear notifications sequence.
 /// </summary>
 public void Clear()
 {
     if (currentNotify != null)
     {
         currentNotify.Return();
         currentNotify = null;
     }
     notifySequence.ForEach(ReturnNotify);
     notifySequence.Clear();
 }
		void ReturnNotify(Notify notify)
		{
			notify.Return();
		}
 void ReturnNotify(Notify notify)
 {
     notify.Return();
 }