* @param form the search form containing current search criteria
     */
    protected void searchPaging(final RenderData data, final SearchForm form) {
        RenderDataUtil.register(data, "roleItems", roleService.getRoleList(rolePager)); // page navi

        // restore from pager
        copyBeanToBean(rolePager, form, op -> op.include("id"));
    }

        // restore from pager
        copyBeanToBean(userPager, form, op -> op.include("id"));
    }

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

                                        <th><la:message key="labels.roles"/></th>
                                        <td><c:forEach var="rt" varStatus="s"
                                                       items="${roleItems}">
                                            <c:forEach var="rtid" varStatus="s" items="${roles}">
                                                <c:if test="${rtid==rt.id}">

                                                   styleClass="form-control">
                                            <c:forEach var="l" varStatus="s" items="${roleItems}">
                                                <la:option value="${l.id}">${f:h(l.name)}</la:option>
                                            </c:forEach>
                                        </la:select>