/**
* get the document node of a topic file.
*
* @param absolutePathToFile topic file
* @return element.
*/
private Element getTopicDoc(final String absolutePathToFile) {
final DocumentBuilder builder = getDocumentBuilder();
try {
final Document doc = builder.parse(absolutePathToFile);
return doc.getDocumentElement();
} catch (final SAXException e) {
e.printStackTrace();
} catch (final IOException e) {
e.printStackTrace();
}
return null;
}
