public static TransformerFactory createTransformerFactory() {
    final TransformerFactoryImpl factory = new TransformerFactoryImpl();
    factory.setAttribute(FeatureKeys.TRACE_LISTENER, new Saxon9TraceListener());
    try {
      factory.setAttribute(FeatureKeys.OPTIMIZATION_LEVEL, "0");
    } catch (IllegalArgumentException e) {
      e.printStackTrace();
    }
    return factory;
  }
public static TransformerFactory createTransformerFactory()