func (d *EventDriver) Save(t *event.Event) (*event.Event, error) {
_now := now()
if t.Id == "" {
uid, _ := wcg.UUID()
t.Id = uid
t.CreatedAt = _now
t.UpdatedAt = _now
} else {
t.UpdatedAt = _now
}
key := d.NewKey(t.Id, 0, nil)
_, err := d.Put(key, t)
return t, err
}
