docs: public MessageStore getOwningMessageStore()
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
          {
              SibTr.entry(this, tc, "getOwningMessageStore");
              SibTr.exit(this, tc, "getOwningMessageStore", "return="+_ms);
          }
          return _ms;
      }