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kotlinlang

just realized my answer isn't really _using_ the sealed class. And I'm not sure how you'd want to use it, actually, because it seems like the method just returns one of those three types. In which case, your choices are:

1) return `Any` and do a check on the type
2) return `MyData&lt;*&gt;` and do an exhaustive `when` across the 3 subclasses, using the data as you want within the blocks, where it will be smart-casted to the proper type