docs: private Element getTopicDoc(final URI absolutePathToFile) {
          final DocumentBuilder builder = getDocumentBuilder();
          try {
              final Document doc = builder.parse(absolutePathToFile.toString());
              return doc.getDocumentElement();
          } catch (final SAXException | IOException e) {
              logger.error("Failed to parse " + absolutePathToFile + ": " + e.getMessage(), e);
          }
          return null;
      }