# my_stub/__init__.py

from typing import overload

@overload
def foo(a: int) -> int: ...

@overload
def foo(a: str) -> str: ...


@overload
def bar(a: int) -> int: ...

@overload
def bar(a: str) -> str: ...

# This shoudn't be in the stub file, but without it Griffe does not detect the function.
def bar(a: int | str) -> int | str: ...

>>> griffe.load('my_stub').members
{'overload': Alias('overload', 'typing.overload'), 'bar': Function('bar', 18, 18)}