code: public static void respondAsHtmlWithMessage(HttpServletResponse resp, String message) throws IOException {
          respondAsHtmlUsingArgsAndTemplateWithHttpStatus(resp, MESSAGE_RESOURCE_PAGE_FILE, HttpStatus.SC_OK, message);
      }
docs: Utility method used to display a message when re-direction happens in the UI flow. Uses the template
  {@link #MESSAGE_RESOURCE_PAGE_FILE}
  
  @param resp
  A {@link HttpServletResponse} object that the servlet is responding on.
  @param message
  Message to display.
  @throws IOException