transformerHandler = FACTORY.newTransformerHandler();
transformerHandler.getTransformer().setOutputProperties(format);
transformerHandler.setResult(new StreamResult(writer));
transformerHandler.startDocument();
xml.toSAX(new EmbeddedXMLPipe(transformerHandler));
transformerHandler.endDocument();
return writer.toString();
} catch (TransformerException e) {
throw new ProcessingException("TransformerException: " + e, e);
} catch (SAXException e) {