*/
    public SitemapUrl() {
        super();
    }

    /**
     * URL of the page. This URL must begin with the protocol (such as http) and
     * end with a trailing slash, if your web server requires it. This value
     * must be less than 2,048 characters.
     */
    private String loc;

    /**
     * The date of last modification of the file. This date should be in W3C

        if (matcher.find()) {
            return matcher.group(1);
        }
        return null;
    }

    /**
     * Gets a duplicate URL by adding or removing a trailing slash.
     *
     * @param requestData the request data to create a duplicate for
     * @return the request data with the duplicate URL
     */
    protected RequestData getDuplicateUrl(final RequestData requestData) {