@Override
  public void processMeta(XmlMetadata file) {

    if (controlDoc == null) {
      // some action and
    } else {
      // real work here
      if (this.xpathExp == null) { // make this an assertion test

      } else {

        Document testDoc = getDocFragment(xpathExp, file);

        if (testDoc != null) {
          if (isdifferent(testDoc, controlDoc)) {
            // process for print formating (identify specific)
            LOG.debug("XML differences found");
          } else {
            // remove this from list of things to report.
            LOG.debug("Remove from list.  XML has default settings");
            LinkedList<AbstractDecoration> dList =
                new LinkedList<AbstractDecoration>(file.getDecorations());
            try {
              file.getDecorations().remove(dList.removeLast());
            } catch (NoSuchElementException ne) {
              LOG.debug("Nothing removed. Decoration list is empty.");
            }
          }
        }
      }
    }

    return;
  }
  /**
   * Extract an XML element.
   *
   * @param xpathExp
   * @param file
   * @return
   */
  private Document getDocFragment(String xpathExp, XmlMetadata file) {

    Document testDoc = null;

    try {
      XPath xpath = XPathFactory.newInstance().newXPath();
      Node node = (Node) xpath.evaluate(xpathExp, file.getParsedDocument(), XPathConstants.NODE);

      if (node != null) {
        TransformerFactory transFactory = TransformerFactory.newInstance();
        Transformer transformer = transFactory.newTransformer();
        StringWriter buffer = new StringWriter();
        transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
        transformer.transform(new DOMSource(node), new StreamResult(buffer));
        String testStr = buffer.toString();
        LOG.debug("src string: " + testStr);

        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
        testDoc =
            dBuilder.parse(new InputSource(new ByteArrayInputStream(testStr.getBytes("utf-8"))));
      }
    } catch (XPathExpressionException xee) {
      LOG.error("Invalid XPath expression: " + xpathExp);
    } catch (Exception e) {
      LOG.error("Error extracting XML content: ", e);
    }

    return testDoc;
  }