class LDAPUserGroupCallbackImpl extends AbstractLDAPUserGroupInfo implements UserGroupCallback {

    @Override
    public boolean existsGroup(String groupId) {
        String context = getConfigProperty(ROLE_CTX);
        String filter = getConfigProperty(ROLE_FILTER);
        String attributeId = getConfigProperty(ROLE_ATTR_ID, DEFAULT_ROLE_ATTR_ID);

        return existsEntity(groupId, context, filter, attributeId);
    }

    public  LDAPUserGroupCallbackImpl(boolean activate);
    public  LDAPUserGroupCallbackImpl(Properties config);

}