docs: public void dereferenceControllable()
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.entry(tc, "dereferenceControllable");
  
      _streamSet = null;
      _ioStreamManager = null;
  
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.exit(tc, "dereferenceControllable");
  
    }