querySet.add("BBB");

        document.put("title", "111AaA222bbb");
        assertEquals("111<strong>AaA</strong>222<strong>bbb</strong>", viewHelper.getContentTitle(document));

        querySet.add("on");
        document.put("title", "on 111 strong on aaaa");

    /** The key of the configuration. e.g. fvh */
    String QUERY_HIGHLIGHT_TYPE = "query.highlight.type";

    /** The key of the configuration. e.g. <strong> */
    String QUERY_HIGHLIGHT_TAG_PRE = "query.highlight.tag.pre";

    /** The key of the configuration. e.g. </strong> */
    String QUERY_HIGHLIGHT_TAG_POST = "query.highlight.tag.post";

    /** The key of the configuration. e.g. u0009u000Au0013u0020 */

                          example: "Enterprise Search Server: <strong>Fess</strong> Commercial Support Open...Search Server: <strong>Fess</strong> What is <strong>Fess</strong> ? <strong>Fess</strong> is very powerful...You can install and run <strong>Fess</strong> quickly on any platforms...Java runtime environment. <strong>Fess</strong> is provided under Apache...Apache license. Demo <strong>Fess</strong> is Elasticsearch-based search"
                        site:

query.highlight.fragment.size=60
query.highlight.number.of.fragments=2
query.highlight.type=fvh
query.highlight.tag.pre=<strong>
query.highlight.tag.post=</strong>
query.highlight.boundary.chars=u0009u000Au0013u0020
query.highlight.boundary.max.scan=20
query.highlight.boundary.scanner=chars
query.highlight.encoder=default
query.highlight.force.source=false

        logger.info("results: {}", results);
        Map<String, Object> item = results.get(0);
        logger.info("item: {}", item);
        assertTrue(item.containsKey("content_title"));
        assertEquals("<strong>CodeLibs</strong> Project", item.get("content_title"));
    }

    private void testDeleteSearchList() {
        final Map<String, Object> requestBody = new HashMap<>();
        requestBody.put("q", "CodeLibs");