}

    /**
     * Gets the display title for a document.
     * Falls back to filename or URL if title is not available.
     * Applies highlighting if enabled.
     *
     * @param document the document data map
     * @return the content title with optional highlighting
     */
    public String getContentTitle(final Map<String, Object> document) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

# Whether to detect boundary position in query highlighting.
query.highlight.boundary.position.detect=true
# Type for text fragment in query highlighting.
query.highlight.text.fragment.type=query
# Size for text fragment in query highlighting.
query.highlight.text.fragment.size=3
# Prefix length for text fragment in query highlighting.
query.highlight.text.fragment.prefix.length=5