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kotlinlang

I have a usecase I dont know how to solve.

I have a class `Product` that I do not want to see initialized by itself, but as one of its subclasses `Hardware` or `Software`. The two subclasses has unique values of their own, but the `Product` class has a few shared values that both hardware/software-products will have. However, when I have a `product.software` instance, it does not seem to be able to access the values in the super class.

What is the correct model here? Is this solveable by sealed class with nested inner classes?