kotlin.ClassCastException: null cannot be cast to kotlin.collections.Map

[b95505017]

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What is the right way to decode DataSnapshot (Firebase realtime database) when the node is empty?

dataSnapshot.value<Foo?>()
dataSnapshot.value(Foo.serializer().nullable)

I expect it will return null, but it throw cast exception instead.

[nbransby]

They should both work, what platform is this on? can you submit PR with a failing test?