StAXOMBuilder builder = new StAXOMBuilder(new ByteArrayInputStream(XML.getBytes("UTF-8")));
OMElement root = builder.getDocumentElement();
OMElement next = (OMElement)root.getChildElements().next();
OMElement po = (OMElement)next.getChildElements().next();
Object jaxb = new OMElement2JAXB(new DefaultExtensionPointRegistry()).transform(po, tContext);
Assert.assertTrue(jaxb instanceof PurchaseOrderType);
}