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