StringReader stringReader = new StringReader(s1);
XMLStreamReader reader = createReader(stringReader);
serializer.readModel(reader, model2);
stringWriter = new StringWriter();
writer = createWriter(stringWriter);
serializer.writeModel(writer, model2);
String s2 = stringWriter.toString();
System.out.println(s2);
assertEquals(s1, s2);
} catch (XMLStreamException ex) {
Exceptions.printStackTrace(ex);