code: public void stop()
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.entry(tc, "stop");
      
      try
      {    
        _lockManager.lockExclusive();
  
        // Flag that we are in a started state. 
        _started = false;
      }      
      finally
      {
        _lockManager.unlockExclusive();
      }
      
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.exit(tc, "stop");    
    }
docs: Stops the proxy handler from processing any more messages