from philo.exceptions import AncestorDoesNotExist
from philo.models.fields import JSONField
from philo.signals import entity_class_prepared
-from philo.utils import ContentTypeRegistryLimiter, ContentTypeSubclassLimiter, AttributeMapper, TreeAttributeMapper
+from philo.utils import ContentTypeRegistryLimiter, ContentTypeSubclassLimiter
+from philo.utils.entities import AttributeMapper, TreeAttributeMapper
from philo.validators import json_validator