assertEquals(fbUser1.id, fbUserKeys.get(0).getId());
assertEquals(fbUser2.id, fbUserKeys.get(1).getId());
assertEquals(fbUser3.id, fbUserKeys.get(2).getId());
assertEquals(fbUser4.id, fbUserKeys.get(3).getId());
KeysKeysKeys k1 = new KeysKeysKeys(null, fbUserKeys);
Key<KeysKeysKeys> k1Key = ds.save(k1);
assertEquals(k1.id, k1Key.getId());
KeysKeysKeys k1Reloaded = ds.get(k1);
KeysKeysKeys k1Loaded = ds.getByKey(KeysKeysKeys.class, k1Key);
assertNotNull(k1Reloaded);
assertNotNull(k1Loaded);
for(Key<FacebookUser> key :k1Loaded.users)
{
assertNotNull(key.getId());