docs: public void dereferenceControllable()
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.entry(tc, "dereferenceControllable");
      
      _messageID = AbstractItem.NO_ID;
      _itemStream = null;
      _refStream = null;   
      
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.exit(tc, "dereferenceControllable");
    }