* Limited by the configured maximum fetch size for groups.
     *
     * @return a list of all available groups
     */
    public List<Group> getAvailableGroupList() {
        return groupBhv.selectList(cb -> {
            cb.query().matchAll();
            cb.query().addOrderBy_Name_Asc();
            cb.paging(fessConfig.getPageGroupMaxFetchSizeAsInteger(), 1);
        });

    }

    private void registerForms(final RenderData data) {
        RenderDataUtil.register(data, "roleItems", roleService.getAvailableRoleList());
        RenderDataUtil.register(data, "groupItems", groupService.getAvailableGroupList());
    }

    // ===================================================================================
    //                                                                        Edit Execute