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Or.txt

In this case to access to properties of class you should cast it inside

Yes I would not do it this way. I would specify the order.
This is for Liskov as someone pointed out.
Anyone should be able to make `class MyGridLayoutManager: GridLayoutManager` and your code should still work as though it's a `GridLayoutManager`.
If you look at specific classes, your code is not allowing substitution.

It's common for two `when` cases to overlap. a `when` block is like a chain of `if else`, when you think about it like that, specifying order makes sense, it's not strange.

Thanks for your answers :slightly_smiling_face: