Map<String, String> props = Utils.newHashMap();
props.put("datanucleus.appengine.datastoreEnableXGTransactions", Boolean.TRUE.toString());
switchDatasource(PersistenceManagerFactoryName.transactional, props);
beginTxn();
HasOneToOneWithUnowned withUnowned = pm.getObjectById(HasOneToOneWithUnowned.class, withKey.getId());
assertNotNull(withUnowned.getOther());
assertEquals(sideB1.getId(), withUnowned.getOther().getId());
commitTxn();
}