Type annotation for classmethod returning instanceHow should I annotate a @classmethod that returns an instance of cls? Here's a bad example: class Foo(object): def __init__(self, bar: str): self.bar = bar @classmethod def with_stuff_appended(cls, bar: str) -> ???: return cls(bar + "stuff") This returns a Foo but more accurately returns whichever subclass of Foo this is called on, so annotating with -> "Foo" wouldn't be good enough.
