code: private static synchronized DocumentBuilder getDocumentFactory()
      {
          if (documentBuilder == null)
          {
              final DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
              documentBuilderFactory.setIgnoringElementContentWhitespace(true);
              try
              {
                  documentBuilderFactory.setFeature(javax.xml.XMLConstants.FEATURE_SECURE_PROCESSING, true);
              }
              catch (final ParserConfigurationException exception)
              {
                  Verbose.exception(exception);
              }
              try
              {
                  documentBuilder = documentBuilderFactory.newDocumentBuilder();
                  documentBuilder.setErrorHandler(null);
              }
              catch (final ParserConfigurationException exception)
              {
                  throw new LionEngineException(exception);
              }
          }
          return documentBuilder;
      }
docs: Get the document factory.
  
  @return The document factory.
  @throws LionEngineException If unable to create builder.