docs: protected Transformer getTransformer() {
      TransformerFactory transformerFactory = domXmlDataFormat.getTransformerFactory();
      try {
        Transformer transformer = transformerFactory.newTransformer();
        transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
        return transformer;
      }
      catch (TransformerConfigurationException e) {
        throw LOG.unableToCreateTransformer(e);
      }
    }