def delete_singleton(self):
        """
        Delete the singleton instance. Can be used for testing to create another
        singleton.
        """
        id_ = id(self)

        if id_ in SingletonPerName._id_to_name_map:
            name = SingletonPerName._id_to_name_map[id_]
            del SingletonPerName._id_to_name_map[id_]
            del SingletonPerName._instances[(self.__class__.__name__, name)]
        else:
            logger.warning("Instance %s not found in our records.", self)

        Delete the singleton instance. Can be used for testing to create another
        singleton.
        
src/trulens_eval/trulens_eval/utils/python.py