If a sealed class is marked as `Immutable` are all...

# compose

[eygraber]

If a sealed class is marked as Immutable are all of its subclasses considered Immutable as well?

[jim]

I think not. Sealed or not, the fact a super class is Immutable tells you nothing about the contract for the subclasses.

[jim]

Therefore, you would need to mark each class individually.

[eygraber]

@jim is this still the case?

In https://kotlinlang.slack.com/archives/CJLTWPH7S/p1637743593403000?thread_ts=1637743593.403000&cid=CJLTWPH7S @Csaba Kozák pointed out that the compiler seems to be marking classes as stable if they have a supertype that is stable.