@Transact(TxnType.REQUIRED)
Person update(Key<Person> key, long id2) {
ofy().transactionless().load().type(Person.class).id(id2).now();
Person pers = ofy().load().key(key).now();
pers.loggedIn();
ofy().save().entity(pers);
log.debug("Last login date is now " + pers.getLastLogin());
return pers;
}