A sample model:

```
  class Foo(db.Model):
     id = db.IntegerProperty()
     bar = db.ListProperty(int, required=True)

```

1. How can I query using either Query or GqlQuery to return all **Foo** entities that have a given value in their **bar** property?
2. If I have a list of ids, is there a single filter that will return all entities whose **id** property is in that list?