languageHelper.langFields = new String[] { "title" };

        String result = languageHelper.getReindexScriptSource();
        assertEquals("if(ctx._source.lang!=null){ctx._source['title_'+ctx._source.lang]=ctx._source.title}", result);
    }

    @Test
    public void test_getReindexScriptSource_multipleFields() {
        languageHelper.langFields = new String[] { "title", "content", "description" };

        "title_gl",
        "title_gu",
        "title_he",
        "title_hi",
        "title_hr",
        "title_hu",
        "title_hy",
        "title_id",
        "title_it",
        "title_ja",
        "title_ko",
        "title_lt",
        "title_lv",
        "title_mk",
        "title_ml",
        "title_nl",
        "title_no",
        "title_pa",
        "title_pl",

    private ChatMessage createAssistantWithSources(final String content, final String... titles) {
        final ChatMessage msg = ChatMessage.assistantMessage(content);
        for (int i = 0; i < titles.length; i++) {
            final Map<String, Object> doc = new HashMap<>();
            doc.put("title", titles[i]);
            doc.put("url", "http://example.com/" + i);
            msg.addSource(new ChatSource(i + 1, doc));

        final String refs = sources.stream().map(s -> {
            final String title = s.getTitle();
            final String url = s.getUrl();
            if (title != null && !title.isEmpty() && url != null && !url.isEmpty()) {
                return title + " (" + url + ")";
            } else if (title != null && !title.isEmpty()) {
                return title;
            } else if (url != null && !url.isEmpty()) {

        }
    }

    // Test environment title variations
    public void xtest_environmentTitleVariations() {
        String[] titles = { "Local Development", "Integration Test", "Staging Environment", "Production", "災害復旧環境" };

        for (String title : titles) {
            FessEnv.SimpleImpl titleEnv = new FessEnv.SimpleImpl() {

     */
    public String getTitle(final ResponseData responseData, final String title, final Map<String, Object> dataMap) {
        if (title == null) {
            return StringUtil.EMPTY; // empty
        }

        final int[] spaceChars = getSpaceChars();
        try (final Reader reader = new StringReader(title)) {

kens:e}){return`<del>${this.parser.parseInline(e)}</del>`}link({href:e,title:t,tokens:n}){let r=this.parser.parseInline(n),i=J(e);if(i===null)return r;e=i;let s='<a href="'+e+'"';return t&&(s+=' title="'+O(t)+'"'),s+=">"+r+"</a>",s}image({href:e,title:t,text:n,tokens:r}){r&&(n=this.parser.parseInline(r,this.parser.textRenderer));let i=J(e);if(i===null)return O(n);e=i;let s=`<img src="${e}" alt="${O(n)}"`;return t&&(s+=` title="${O(t)}"`),s+=">",s}text(e){return"tokens"in e&&e.tokens?this.parser....

        source.put("title", "Title with <script>alert('xss')</script>");
        source.put("content", "Content with & < > \" '");
        source.put("lang", "en");

        final String html = new HtmlIndexExportFormatter().format(source, Collections.emptySet());

        assertTrue(html.contains("<title>Title with &lt;script&gt;alert(&#39;xss&#39;)&lt;/script&gt;</title>"));

        assertTrue(messages.hasMessageOf("doc.title"));
        assertTrue(messages.hasMessageOf("doc.role"));
        assertTrue(messages.hasMessageOf("doc.boost"));
    }

    @Test
    public void test_validateFields_requiredFieldsPartiallyMissing() {
        final Map<String, Object> doc = new HashMap<>();
        doc.put("url", "https://example.com");
        doc.put("title", "Test Title");
        // role and boost are missing

        logger.info("Updated documents: {}", updatedDocs);

        // Verify updated content
        for (Map<String, Object> doc : updatedDocs) {
            String title = doc.get("title").toString();
            assertTrue(title.endsWith("_updated"), "Document title should be updated");
        }

        logger.info("[END] testBulkUpdate");
    }

    @Test
    void bulkCreateEmptyListTest() {