[Python] type hint for an instance of a non specific dataclass

I have a function that accepts an instance of any dataclass. what would be an appropriate type hint for it ?

haven't found something official in the python documentation


this is what I have been doing, but i don't think it's correct

from typing import Any, NewType

DataClass = NewType('DataClass', Any)
def foo(obj: DataClass):
...


another idea is to use a Protocol with these class attributes __dataclass_fields__, __dataclass_params__.

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