docs: private ModelAndView generateErrorView(final String code, final Object[] args, final HttpServletRequest request) {
          val modelAndView = new ModelAndView(this.failureView);
          modelAndView.addObject("code", StringEscapeUtils.escapeHtml4(code));
          val desc = StringEscapeUtils.escapeHtml4(this.context.getMessage(code, args, code, request.getLocale()));
          modelAndView.addObject("description", desc);
          return modelAndView;
      }