@Override
            public String getIndexFieldUrl() {
                return "url";
            }

            @Override
            public String getIndexFieldTitle() {
                return "title";
            }
        });
    }

    @Override
    public void tearDown() throws Exception {
        ComponentUtil.setFessConfig(null);
        super.tearDown();

        final Integer fuzzyMinLength = fessConfig.getQueryBoostFuzzyMinLengthAsInteger();
        if (fuzzyMinLength >= 0 && text.length() >= fuzzyMinLength) {
            defaultQuery.add(QueryBuilders.fuzzyQuery(fessConfig.getIndexFieldTitle(), text)
                    .boost(fessConfig.getQueryBoostFuzzyTitleAsDecimal().floatValue())
                    .prefixLength(fessConfig.getQueryBoostFuzzyTitlePrefixLengthAsInteger())

                // Override to return empty string instead of null to avoid NullPointerException
                return "";
            }

            @Override
            public String getIndexFieldTitle() {
                return "title";
            }

            @Override
            public String getIndexFieldContent() {
                return "content";
            }

            @Override

     */
    protected void normalizeData(final ResponseData responseData, final Map<String, Object> dataMap) {
        final Object titleObj = dataMap.get(fessConfig.getIndexFieldTitle());
        if (titleObj != null) {
            dataMap.put(fessConfig.getIndexFieldTitle(),
                    ComponentUtil.getDocumentHelper().getTitle(responseData, titleObj.toString(), dataMap));
        }
    }

    /**

            }

            @Override
            public String getIndexFieldCreated() {
                return "created";
            }

            @Override
            public String getIndexFieldTitle() {
                return "title";
            }

            @Override
            public String getIndexFieldDigest() {
                return "digest";
            }

            @Override

     */
    public String getContentTitle(final Map<String, Object> document) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        String title = DocumentUtil.getValue(document, fessConfig.getIndexFieldTitle(), String.class);
        if (StringUtil.isBlank(title)) {
            title = DocumentUtil.getValue(document, fessConfig.getIndexFieldFilename(), String.class);
            if (StringUtil.isBlank(title)) {

     * The value is, e.g. title <br>
     * comment: Field name for title in the index.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexFieldTitle();

    /**
     * Get the value for the key 'index.field.host'. <br>
     * The value is, e.g. host <br>
     * comment: Field name for host in the index.