docs: private final void doEnqueueWork(AsyncUpdate asyncUpdate)
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.entry(tc, "doEnqueueWork", asyncUpdate);
  
      try
      {
        msUpdateThread.enqueueWork(asyncUpdate);
        countAsyncUpdatesOutstanding++; // can do it here since synchronized on this
      }
      catch (ClosedException e)
      {
        // should not occur!
        FFDCFilter.processException(
          e,
          "com.ibm.ws.sib.processor.impl.AOStream.doEnqueueWork",
          "1:2713:1.80.3.24",
          this);
        SibTr.exception(tc, e);
      }
  
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.exit(tc, "doEnqueueWork");
    }