public String[] getQueryAdditionalCacheResponseFields(String... fields) {
                return fields;
            }

            @Override
            public String[] getQueryAdditionalHighlightedFields(String... fields) {
                return fields;
            }

            @Override
            public String[] getQueryAdditionalSearchFields(String... fields) {
                return fields;

            @Override
            public String[] getQueryAdditionalCacheResponseFields(String... fields) {
                return fields;
            }

            @Override
            public String[] getQueryAdditionalHighlightedFields(String... fields) {
                return fields;
            }

            @Override
            public String[] getQueryAdditionalSearchFields(String... fields) {
                return fields;

            public String[] getQueryAdditionalCacheResponseFields(String... fields) {
                return fields;
            }

            @Override
            public String[] getQueryAdditionalHighlightedFields(String... fields) {
                return fields;
            }

            @Override
            public String[] getQueryAdditionalSearchFields(String... fields) {
                return fields;

                return baseConfig.getQueryAdditionalCacheResponseFields(fields);
            }

            @Override
            public String[] getQueryAdditionalHighlightedFields(String... fields) {
                return baseConfig.getQueryAdditionalHighlightedFields(fields);
            }

            @Override
            public String[] getQueryAdditionalSearchFields(String... fields) {

    }

    String getQueryAdditionalHighlightedFields();

    default String[] getQueryAdditionalHighlightedFields(final String... fields) {
        final List<String> list = new ArrayList<>(fields.length + 10);
        stream(fields).of(stream -> stream.forEach(list::add));
        split(getQueryAdditionalHighlightedFields(), ",")

            public String[] getQueryAdditionalCacheResponseFields(String... fields) {
                return fields;
            }

            @Override
            public String[] getQueryAdditionalHighlightedFields(String... fields) {
                return fields;
            }

            @Override
            public String[] getQueryAdditionalSearchFields(String... fields) {
                return fields;

            public String[] getQueryAdditionalCacheResponseFields(String... fields) {
                return fields;
            }

            @Override
            public String[] getQueryAdditionalHighlightedFields(String... fields) {
                return fields;
            }

            @Override
            public String[] getQueryAdditionalSearchFields(String... fields) {
                return fields;

                    fessConfig.getIndexFieldLang(), //
                    fessConfig.getIndexFieldCache());
        }
        if (highlightedFields == null) {
            highlightedFields = fessConfig.getQueryAdditionalHighlightedFields( //
                    fessConfig.getIndexFieldContent());
        }
        if (searchFields == null) {
            searchFields = fessConfig.getQueryAdditionalSearchFields(//

     * comment: Additional highlighted fields for queries.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getQueryAdditionalHighlightedFields();

    /**
     * Get the value for the key 'query.additional.highlighted.fields' as {@link Integer}. <br>
     * The value is, e.g.  <br>
     * comment: Additional highlighted fields for queries.