code: final void clearTransportVersion() {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(this, tc, "clearTransportVersion");
          getHdr2().setChoiceField(JsHdr2Access.TRANSPORTVERSION, JsHdr2Access.IS_TRANSPORTVERSION_EMPTY);
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(this, tc, "clearTransportVersion");
      }
docs: Clear the transportVersion field in the message header.
  This method is package visibility as it is also used by JsJmsMessageImpl