Feature request

Modifying properties on the immutable class does cause an error. But i expected the @immutable prop to be inherrited by its children.

In my example i would've expected the assignment of a property in the B class to also cause an issue. The same should probably be the case for interfaces.

https://phpstan.org/r/bd80b15d-5af1-4d10-8f36-20968ecacd45

Did PHPStan help you today? Did it make you happy in any way?

I'm loving the immutable so far.