class ExtSourceVOOT extends ExtSource implements ExtSourceApi {

	@Override
	public List<Map<String, String>> getUsersSubjects() {
		query = getAttributes().get(UsersManager.USERS_QUERY);

		prepareEnvironment();

		try {
			return getUsersFromRemote(getGroupsFromRemote(), 0);
		} catch (IOException ex) {
			log.error("IOException in getUsersSubjects() method while obtaining users"
				+ "from VOOT external source", ex);
		}

		return null;
	}

}