* Pager class for handling user list pagination.
 * This class manages pagination state and user search criteria for the user management interface.
 */
public class UserPager implements Serializable {

    /**
     * Default constructor for UserPager.
     */
    public UserPager() {
        // Default constructor
    }

    private static final long serialVersionUID = 1L;

    /** Default page size for user list pagination */

     *
     * @param userPager the pager containing search criteria and pagination settings
     * @return a list of users matching the criteria
     */
    public List<User> getUserList(final UserPager userPager) {

        final PagingResultBean<User> userList = userBhv.selectPage(cb -> {
            cb.paging(userPager.getPageSize(), userPager.getCurrentPageNumber());

        assertNull(userPager.id);
        assertNull(userPager.roles);
        assertNull(userPager.groups);
        assertNull(userPager.versionNo);

        userPager.setAllRecordCount(999);
        assertEquals(999, userPager.getAllRecordCount());
        userPager.setAllPageCount(999);
        assertEquals(999, userPager.getAllPageCount());
        userPager.setExistPrePage(true);
        assertTrue(userPager.isExistPrePage());

    // PUT /api/admin/user/settings
    @Execute
    public JsonResponse<ApiResult> settings(final SearchBody body) {
        validateApi(body, messages -> {});
        final UserPager pager = copyBeanToNewBean(body, UserPager.class);
        final List<User> list = userService.getUserList(pager);
        return asJson(

                                </la:info>
                                <la:errors/>
                            </div>
                            <%-- List --%>
                            <c:if test="${userPager.allRecordCount == 0}">
                                <div class="row top10"><div class="col-sm-12 empty-list-placeholder"><i class="fa fa-info-circle text-primary" aria-hidden="true"></i>

| Classes | PascalCase | `UserService`, `FessBaseAction` |
| Methods | camelCase + verb | `getUserList()`, `setupHtmlData()` |
| Constants | UPPER_SNAKE_CASE | `DEFAULT_PAGE_SIZE` |
| Fields | camelCase | `userPager`, `fessConfig` |

## Log Message Guidelines

- Logger: `LogManager.getLogger(ClassName.class)`
- Format: `key=value` (e.g., `userId={}`, `url={}`)
- Prefix with `[name]` when context identification is needed