public PersonalEventResponseList postPersonalEvents(String asUserId,
                                                        PersonalEventList aaList) {
        if (asUserId == null || asUserId.trim().length() == 0) {
            throw new IllegalArgumentException("userId is null");
        }

        return post(REST_URL_PERSONAL_EVENTS + asUserId, aaList,
                PersonalEventResponseList.class);
    }