code: function listSubscribers(req, res, next) {
    var listSubscribersParams = {
      _id: req.params.id
    };
  
    logger.debug("Middleware: listSubscribers: ", {params: listSubscribersParams});
  
    forms.getNotifications(_.extend(req.connectionOptions, listSubscribersParams), formsResultHandlers(constants.resultTypes.forms, req, next));
  }
docs: List All Subscribers For A Form
  @param req
  @param res
  @param next