mgr.flush();
NoSqlEntityManager mgr2 = factory.createEntityManager();
Email email = mgr2.find(Email.class, sub.getId());
NoSqlEntityManager mgr3 = factory.createEntityManager();
Email email2 = mgr3.find(Email.class, sub.getId());
List<String> ids = email.getIds();
Assert.assertEquals("one", ids.get(0));
List<Integer> nums = email.getInts();