*/
    public List<SitemapImage> getImages() {
        if (images == null) {
            images = new ArrayList<>();
        }
        return images;
    }

    /**
     * Adds an image to this sitemap URL.
     * @param image the image to add
     */
    public void addImage(final SitemapImage image) {
        getImages().add(image);
    }

    /**