final ChatSource source = new ChatSource();
        source.setIndex(1);
        source.setTitle("Test Document");

        message.addSource(source);

        assertEquals(1, message.getSources().size());
        assertEquals("Test Document", message.getSources().get(0).getTitle());
    }

    @Test
    public void test_addSourceWithNullSources() {

    /**
     * Gets the title for this facet query view.
     *
     * @return the title string
     */
    public String getTitle() {
        return title;
    }

    /**
     * Sets the title for this facet query view.
     *
     * @param title the title to set
     */
    public void setTitle(final String title) {
        this.title = title;
    }

    /**

        assertEquals("labels.facet_timestamp_title", view1.getTitle());
        assertEquals(4, view1.getQueryMap().size());
        FacetQueryView view2 = list.get(1);
        assertEquals("labels.facet_contentLength_title", view2.getTitle());
        assertEquals(5, view2.getQueryMap().size());
        FacetQueryView view3 = list.get(2);
        assertEquals("labels.facet_filetype_title", view3.getTitle());
        assertEquals(10, view3.getQueryMap().size());

         *
         * @return the source title
         */
        public String getTitle() {
            return title;
        }

        /**
         * Sets the source title.
         *
         * @param title the source title
         */
        public void setTitle(final String title) {
            this.title = title;
        }

        /**

     * @param title the raw title text to process
     * @param dataMap additional data map (not currently used)
     * @return the normalized title, or empty string if title is null
     */
    public String getTitle(final ResponseData responseData, final String title, final Map<String, Object> dataMap) {
        if (title == null) {
            return StringUtil.EMPTY; // empty
        }

        assertEquals("", documentHelper.getTitle(responseData, null, dataMap));
        assertEquals("", documentHelper.getTitle(responseData, "", dataMap));
        assertEquals("", documentHelper.getTitle(responseData, " ", dataMap));
        assertEquals("", documentHelper.getTitle(responseData, "  ", dataMap));
        assertEquals("", documentHelper.getTitle(responseData, "\t", dataMap));

        facetQueryView.setTitle(title1);
        assertEquals(title1, facetQueryView.getTitle());

        String title2 = "Different Title";
        facetQueryView.setTitle(title2);
        assertEquals(title2, facetQueryView.getTitle());

        facetQueryView.setTitle(null);
        assertNull(facetQueryView.getTitle());
    }

    // Test query map operations
    @Test
    public void test_getQueryMap() {

    }

    @Test
    public void test_user_title() {
        final User user = new User();
        assertNull(user.getTitle());

        user.setTitle("Senior Engineer");
        assertEquals("Senior Engineer", user.getTitle());
    }

    @Test
    public void test_user_postalCode() {
        final User user = new User();
        assertNull(user.getPostalCode());

        if (sources == null || sources.isEmpty()) {
            return msg.getContent();
        }
        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 + ")";

        final Object titleObj = dataMap.get(fessConfig.getIndexFieldTitle());
        if (titleObj != null) {
            dataMap.put(fessConfig.getIndexFieldTitle(),
                    ComponentUtil.getDocumentHelper().getTitle(responseData, titleObj.toString(), dataMap));
        }
    }

    /**
     * Processes robots meta tags in the HTML document.
     * Handles noindex, nofollow, and none directives.
     *