The existing match() function expects a dictionary. But when writing tests for a certain other SDK, it returns objects instead of dictionaries. So it would be nice to have an option to serialize random objects as well, without having to care about the exact format.

An alternative implementation to get the same functionality would be to add this to the match() function:

def match(self, key: str, obj: object) -> None:
    # Transform incoming object to a dictionary
    obj: dict = _convert_object_to_dict(obj)

    ...

I have no preference either way - I just picked the least invasive change, to avoid breaking the existing functionality in some unknown way.