@Override
    @Transactional
    public Collection<ConnectionGroup> getAll(Collection<String> identifiers) throws GuacamoleException {
        Collection<ModeledConnectionGroup> objects = connectionGroupService.retrieveObjects(getCurrentUser(), identifiers);
        return Collections.<ConnectionGroup>unmodifiableCollection(objects);
    }
Service for managing connection group objects.
extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/apache/guacamole/auth/jdbc/connectiongroup/ConnectionGroupDirectory.java