code: void processAckExpected(
      long ackExpStamp,
      int priority,
      Reliability reliability,
      SIBUuid12 stream)
     throws SIResourceException
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.entry(tc, "processAckExpected", new Long(ackExpStamp));
  
      _internalOutputStreamManager.processAckExpected(ackExpStamp, priority, reliability, stream);
      
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.exit(tc, "processAckExpected");
    }
docs: needs to be forwarded downstream.