return false;
            }
            Element element = document.createElement("link");
            String targetId = String.format("%s.%s", classMetaData.getClassName(), href.substring(1));
            element.setAttribute("linkend", targetId);
            nodes.push(element);
            return true;
        }

        @Override
        public void onEndElement(String element) {

        final boolean result = testClient.reindexConfigIndices(false, empty);

        assertTrue(result);
        assertEquals("No indices should be created with empty targets", 0, testClient.createdIndices.size());
        assertEquals("No reindex should occur with empty targets", 0, testClient.reindexPairs.size());
    }

    // ==========================================================================

        <constraint name="__context__" within="" contains="" />

> a local machine without necessary parallelization and caching.
> The full test suites are executed on the CI instance for multiple configurations,
> and you can rely on it after doing initial sanity check and targeted local testing.

### Copyright and License

When updating/modifying a file, please do not make changes to the copyright header.

When creating a new file, please make sure to add a header as defined below.

                                    <tr>
                                        <th><la:message key="labels.joblog_target"/></th>
                                        <td>${f:h(target)}<la:hidden property="target"/></td>
                                    </tr>
                                    <tr>
                                        <th><la:message key="labels.joblog_startTime"/></th>

     */
    public CommandChain() {
        // Default constructor
    }

    /**
     * Checks if the given username is a target user for command execution.
     * @param username The username to check.
     * @return True if the user is a target user, false otherwise.
     */
    protected boolean isTargetUser(final String username) {
        if (targetUsers == null) {
            return true;

        assertEquals("Retention should be RUNTIME", RetentionPolicy.RUNTIME, retention.value());
    }

    // Test annotation target elements
    @Test
    public void test_targetElements() {
        final Target target = CustomSize.class.getAnnotation(Target.class);
        assertNotNull(target, "Target annotation should be present");

        assertEquals("Retention should be RUNTIME", RetentionPolicy.RUNTIME, retention.value());
    }

    // Test annotation target elements
    @Test
    public void test_targetElements() {
        final Target target = UriType.class.getAnnotation(Target.class);
        assertNotNull(target, "Target annotation should be present");

        assertEquals("PrunedTag [tag=a, id=null, css=test, attrName=null, attrValue=null]", tags[0].toString());

        tags = PrunedTag.parse("a[target=_blank]");
        assertEquals(1, tags.length);
        assertEquals("PrunedTag [tag=a, id=null, css=null, attrName=target, attrValue=_blank]", tags[0].toString());

        tags = PrunedTag.parse("a.link,div#123");
        assertEquals(2, tags.length);

        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final String[] targets = fessConfig.getThumbnailGeneratorTargetsAsArray();
        final List<ThumbnailQueue> list = new ArrayList<>();
        taskList.stream().filter(entity -> entity != null).forEach(task -> {
            for (final String target : targets) {
                final ThumbnailQueue entity = new ThumbnailQueue();