if (doc == null) {
            saveError(messages -> messages.addErrorsDocidNotFound(GLOBAL, form.docId));
            return redirect(ErrorAction.class);
        }

        final String content = viewHelper.createCacheContent(doc, form.hq);
        if (content == null) {
            saveError(messages -> messages.addErrorsDocidNotFound(GLOBAL, form.docId));
            return redirect(ErrorAction.class);
        }

     *
     * @param doc the document data map
     * @param queries the search queries for highlighting
     * @return the rendered cache content
     */
    public String createCacheContent(final Map<String, Object> doc, final String[] queries) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        doc.put("url", "http://example.com");
        doc.put("cache", "test cache content");
        String[] queries = { "test" };

        try {
            String result = viewHelper.createCacheContent(doc, queries);
            assertTrue(true);
        } catch (Exception e) {
            assertTrue(true);
        }
    }

    @Test
    public void test_getClientIp() {