public String[] getHighlightedFields() {
        return highlightedFields;
    }

    /**
     * Sets the fields that can be highlighted in search results.
     *
     * @param highlightedFields array of field names that can be highlighted
     */
    public void setHighlightedFields(final String[] highlightedFields) {
        this.highlightedFields = highlightedFields;
    }

    /**

    }

    public void test_highlightedFields_withNull() {
        queryFieldConfig.highlightedFields = null;

        // When highlightedFields is null, the method should handle it gracefully
        // or throw an exception. Test the actual behavior.
        queryFieldConfig.highlightedFields(stream -> {
            // If it doesn't throw NPE, it should provide an empty stream

    /** Character encoding for URL links */
    protected String urlLinkEncoding = Constants.UTF_8;

    /** Fields that should be highlighted in search results */
    protected String[] highlightedFields;

    /** Original highlight tag prefix */
    protected String originalHighlightTagPre = "";

    /** Original highlight tag suffix */
    protected String originalHighlightTagPost = "";

            final String encoder = fessConfig.getQueryHighlightEncoder();
            final HighlightBuilder highlightBuilder = new HighlightBuilder();
            queryFieldConfig.highlightedFields(
                    stream -> stream.forEach(hf -> highlightBuilder.field(new HighlightBuilder.Field(hf).highlighterType(highlighterType)
                            .fragmentSize(fragmentSize)