*
     * @param date the date to format
     * @return formatted date string, or empty string if date is null
     */
    public static String formatDate(final Date date) {
        if (date == null) {
            return StringUtil.EMPTY;
        }
        final SimpleDateFormat sdf = new SimpleDateFormat(Constants.ISO_DATETIME_FORMAT);

        assertNull(param.getName());
        assertNotNull(param.getValues());
        assertEquals(1, param.getValues().length);
    }

    @Test
    public void test_constructor_withEmptyName() {
        // Test with empty name
        String name = "";
        String[] values = { "value1", "value2" };
        RequestParameter param = new RequestParameter(name, values);

        assertEquals("", param.getName());

        RenderData data = new RenderData();
        List<BsUser> emptyList = new ArrayList<>();

        RenderDataUtil.register(data, "empty", emptyList);

        Object result = data.getDataMap().get("empty");
        assertEquals(emptyList, result); // Empty collections are registered as-is
    }

    @Test
    public void test_register_nonEntityList() {
        RenderData data = new RenderData();

    /**
     * Test convertWithFieldCheck() with empty text.
     */
    @Test
    public void test_convertWithFieldCheck_withEmptyText() {
        FessConfig fessConfig = ComponentUtil.getFessConfig();
        QueryContext context = new QueryContext("test", true);

        QueryBuilder result = queryCommand.convertWithFieldCheck(fessConfig, context, "title", "", // Empty text

     * @return The set of highlighted query terms, or empty set if not initialized.
     */
    public Set<String> getHighlightedQuerySet() {
        return highlightedQuerySet != null ? highlightedQuerySet : new HashSet<>();
    }

    /**
     * Gets the field log map containing field names and their associated query terms.
     * @return The field log map, or empty map if not initialized.
     */

     */
    public OptionalEntity<FileConfig> getFileConfigByName(final String name) {
        final ListResultBean<FileConfig> list = fileConfigBhv.selectList(cb -> {
            cb.query().setName_Equal(name);
            cb.query().addOrderBy_SortOrder_Asc();
        });
        if (list.isEmpty()) {
            return OptionalEntity.empty();
        }

    /**
     * Returns an empty OptionalThing for login manager since API actions
     * use token-based authentication instead of traditional session-based login.
     *
     * @return empty OptionalThing indicating no login manager is used
     */
    @Override
    protected OptionalThing<LoginManager> myLoginManager() {
        return OptionalThing.empty();
    }

    /**

    }

    @Override
    public LaJobRunner createRunner() {
        return new LaJobRunner().useAccessContext(
                resource -> accessContextLogic.create(resource, OptionalThing::empty, OptionalThing::empty, () -> APP_TYPE));
    }

    /**
     * Sets the job class to be executed by this scheduler.
     *
     * @param jobClass the job class to set
     */

                            <c:if test="${empty fessPropItems}">
									<textarea id="fessPropData" class="systemInfoData form-control"
                                              readonly><la:message
                                            key="labels.system_info_system_properties_does_not_exist"/></textarea>
                            </c:if>
                            <c:if test="${!empty fessPropItems}">

 */
public class CronExpressionValidator implements ConstraintValidator<CronExpression, String> {

    /**
     * Default constructor.
     */
    public CronExpressionValidator() {
        // Empty constructor
    }

    @Override
    public void initialize(final CronExpression constraintAnnotation) {
    }

    @Override