def _values(self, *original, **kwargs):
        if not kwargs.get('prepare', False):
            return super(MultilingualQuerySet, self)._values(*original)
        new_fields, translation_fields = append_fallback(self.model, original)
        clone = super(MultilingualQuerySet, self)._values(*list(new_fields))
        clone.original_fields = tuple(original)
        clone.translation_fields = translation_fields
        clone.fields_to_del = new_fields - set(original)
        return clone

    # This method was not present in django-linguo
dataset/ETHPy150Open deschler/django-modeltranslation/modeltranslation/manager.py/MultilingualQuerySet._values/original