final XStream xstream = new XStream() {
protected MapperWrapper wrapMapper(final MapperWrapper next) {
return new Hibernate4Mapper(next);
}
};
xstream.registerConverter(new HibernateProxyConverter());
xstream.registerConverter(new Hibernate4PersistentCollectionConverter(xstream.getMapper()));
xstream.registerConverter(new Hibernate4PersistentMapConverter(xstream.getMapper()));
xstream.registerConverter(new Hibernate4PersistentSortedMapConverter(xstream.getMapper()));
xstream.registerConverter(new Hibernate4PersistentSortedSetConverter(xstream.getMapper()));