code: private Document getDocument(FileResource resource) throws SAXException, IOException {
          return documentBuilder.parse(resource.getFile());
      }
docs: Parses the xml file with a {@link DocumentBuilder}.
  
  @param resource
  the file to read
  
  @return a {@link Document}
  
  @throws SAXException
  see {@link DocumentBuilder#parse(java.io.File)}
  @throws IOException
  see {@link DocumentBuilder#parse(java.io.File)}