final StringWriter writer = new StringWriter();
final Properties properties = new Properties();
properties.setProperty(OutputKeys.INDENT, "yes");
final DOMSerializer serializer = new ExtendedDOMSerializer(context.getBroker(), writer, properties);
try {
serializer.serialize(data.getNode());
} catch(final TransformerException e) {
logger.debug("Exception while serializing XUpdate document", e);
throw new XPathException(this, "Exception while serializing XUpdate document: " + e.getMessage(), e);
}
final String xupdate = writer.toString();