@Override
    @Transactional
    public Collection<UserGroup> getAll(Collection<String> identifiers) throws GuacamoleException {
        Collection<ModeledUserGroup> objects = userGroupService.retrieveObjects(getCurrentUser(), identifiers);
        return Collections.<UserGroup>unmodifiableCollection(objects);
    }
Service for managing user group objects.
extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/apache/guacamole/auth/jdbc/usergroup/UserGroupDirectory.java