code: protected void toNext(ActionRuntime runtime, NextJourney journey) throws IOException, ServletException {
          if (journey.hasJourneyProvider()) { // e.g. HTML/JSON response
              journey.getJourneyProvider().bonVoyage();
          }
          if (journey.hasViewRouting()) { // basically HTML response
              if (journey.isRedirectTo()) {
                  doRedirect(runtime, journey);
              } else {
                  final HtmlRenderer renderer = prepareHtmlRenderer(runtime, journey);
                  renderer.render(getRequestManager(), runtime, journey);
              }
          }
          // do nothing if undefined
      }
docs: =======