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      final WebAppDescriptor web = Descriptors.importAs(WebAppDescriptor.class).from(
            source);

      final InputStream stream = new ByteArrayInputStream(web.exportAsString().getBytes());

      final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
      factory.setNamespaceAware(true);
      final DocumentBuilder builder = factory.newDocumentBuilder();
      final Document doc=builder.parse(stream);

      final Node root = new Node(doc.getDocumentElement().getNodeName());
      log.info(root.attribute("version")); // null