@Override
	public JSONObject main(Map<String, String> params, Session session)
			throws Exception {
		JSONObject rtn = new JSONObject();
		rtn.put("rtnCode", this.getRtnCode(200));
		long activeUserId = session.getActiveUserId();
		session.setActiveUserId(0L);
		Notification.stop(activeUserId);
		return rtn;
	}