code: @RequestMapping(value = "api/edit/enable/custom", method = RequestMethod.POST)
      public
      @ResponseBody
      String enableCustomResponse(Model model, String custom, int path_id,
                                  @RequestParam(defaultValue = Constants.PROFILE_CLIENT_DEFAULT_ID) String clientUUID) throws Exception {
          if (custom.equals("undefined"))
              return null;
          editService.enableCustomResponse(custom, path_id, clientUUID);
          return null;
      }
docs: Enables a custom response
  
  @param model
  @param custom
  @param path_id
  @param clientUUID
  @return
  @throws Exception