code: protected void processAction(HttpServletRequest request, HttpServletResponse response, ActionExecute execute, String paramPath)
              throws IOException, ServletException {
          logger.debug("...Routing to action: name={} params={}", execute.getActionMapping().getActionName(), paramPath);
          LaActionExecuteUtil.setActionExecute(execute); // for e.g. tag-library use
          getRequestProcessor().process(execute, analyzePathParam(execute, paramPath)); // #to_action
      }
docs: ==============