Is it possible in kivy to create nested ids with "local" scope?

Question

Python

As far as I understand, ids in kivy have a "global" scope,
that is, by default, you can write in kv
(1)

BoxLayout
    id:a
    BoxLayout
        id:b

and get them through self.root.ids.aand self.root.ids.b
And you can't write
(2)

BoxLayout
    id:a
    BoxLayout
        id:a

and get them via self.root.ids.aand self.root.ids.a.ids.a
Is it possible in kivy to do something similar to (2)?