docs: public PubSubMessageItemStream getPublishPoint()
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
          {
              SibTr.entry(tc, "getPublishPoint");
              SibTr.exit(tc, "getPublishPoint", _pubsubMessageItemStream);
          }
  
          return _pubsubMessageItemStream;
      }