* Initializes internal data structures for processing the GSA configuration.
     *
     * @throws SAXException if a SAX error occurs during initialization
     */
    @Override
    public void startDocument() throws SAXException {
        tagQueue = new LinkedList<>();
        labelList = new ArrayList<>();
        labelType = null;
    }

    /**

     * @return the actual version string with timestamp and build number, or null if not found
     * @throws SAXException if XML parsing fails
     * @throws IOException if I/O error occurs
     */
    protected String getSnapshotActualVersion(final DocumentBuilder builder, final String pluginUrl, final String version)
            throws SAXException, IOException {
        String timestamp = null;
        String buildNumber = null;