@RequestMapping(value = "/refresh", method = RequestMethod.GET)
 public String refresh(HttpServletRequest request, Model uiModel) {
   User user = (User) request.getSession().getAttribute(Constants.KME_USER_KEY);
   try {
     calendarEventOAuthService.reloadPersonalCache(user.getUserId());
   } catch (PageLevelException pageLevelException) {
     uiModel.addAttribute("message", pageLevelException.getMessage());
     return "calendar/message";
   }
   uiModel.addAttribute("message", "Your calendar has been refreshed.");
   return "calendar/message";
 }