@classmethod
def unregister_dict_to_class(cls, classname):
    """
        Removes the converter registered for the given classname. Dicts with that classname tag
        will be deserialized by the default mechanism again.

        This mechanism is not used for the pickle serializer.
        """
    if classname in cls.__custom_dict_to_class_registry:
        del cls.__custom_dict_to_class_registry[classname]
