this.snippet = snippet;
        }

        /**
         * Gets the ViewHelper-processed URL for display.
         *
         * @return the URL link
         */
        public String getUrlLink() {
            return urlLink;
        }

        /**
         * Sets the ViewHelper-processed URL for display.
         *
         * @param urlLink the URL link
         */

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        if (doc.get(fessConfig.getResponseFieldUrlLink()) == null) {
            doc.put(fessConfig.getResponseFieldUrlLink(), ComponentUtil.getViewHelper().getUrlLink(doc));
        }
    }

    /**
     * Result of a search operation, including queryId and requestedTime.
     */
    protected static class ChatSearchResult {

    private void assertUrlLink(String url, String expected) {
        Map<String, Object> doc = new HashMap<>();
        doc.put("doc_id", "docId");
        doc.put("url", url);
        assertEquals(expected, viewHelper.getUrlLink(doc));
    }

    @Test
    public void test_replaceHighlightQueries() {
        String text;
        String[] queries;

        text = "<a>123<b>456<c>";

        doc.put("url_link", "http://proxy.example.com/file.doc");

        final ChatMessage.ChatSource source = new ChatMessage.ChatSource(1, doc);
        assertEquals("http://proxy.example.com/file.doc", source.getUrlLink());
        assertNull(source.getGoUrl());

        source.setGoUrl("/go/?rt=123&docId=doc123&queryId=q1&order=0");
        assertEquals("/go/?rt=123&docId=doc123&queryId=q1&order=0", source.getGoUrl());
    }