class RoleListSerializer(serializers.ListSerializer):
    def create(self, validated_data):
        ModelClass = self.child.Meta.model
        objects_to_create = []
        for model_data in validated_data:
            self.child.changes = []
            object_to_create = self.child.create(model_data)
            objects_to_create.append(object_to_create)
            self.changes.extend(self.child.changes)
        try:
            created_objects = ModelClass._default_manager.bulk_create(
                objects_to_create, ignore_conflicts=True
            )
        except TypeError:
            tb = traceback.format_exc()
            msg = (
                "Got a `TypeError` when calling `%s.%s.create()`. "
                "This may be because you have a writable field on the "
                "serializer class that is not a valid argument to "
                "`%s.%s.create()`. You may need to make the field "
                "read-only, or override the %s.create() method to handle "
                "this correctly.\nOriginal exception was:\n %s"
                % (
                    ModelClass.__name__,
                    ModelClass._default_manager.name,
                    ModelClass.__name__,
                    ModelClass._default_manager.name,
                    self.__class__.__name__,
                    tb,
                )
            )
            raise TypeError(msg)
        return created_objects