def METHOD_NAME(self, bot, paramdict):
    json_dict = {"update_id": self.update_id}
    # Convert the single update 'item' to a dict of that item and apply it to the json_dict
    json_dict.update({k: v.to_dict() for k, v in paramdict.items()})
    update = Update.de_json(json_dict, bot)
    assert update.api_kwargs == {}
    assert update.update_id == self.update_id
    # Make sure only one thing in the update (other than update_id) is not None
    i = 0
    for _type in all_types:
        if getattr(update, _type) is not None:
            i += 1
            assert getattr(update, _type) == paramdict[_type]
    assert i == 1