          instance._m2m_data = m2m_data
          instance._nested_forward_relations = nested_forward_relations
  
          return instance
  
      def from_native(self, data, files):
 
</s> remove                  allow_delete=False, **kwargs):
 </s> add                  allow_add_remove=False, **kwargs): </s> remove         self.allow_delete = allow_delete
 </s> add         self.allow_add_remove = allow_add_remove
        instance._removed_relations = removed_relations
          instance._m2m_data = m2m_data
          instance._nested_forward_relations = nested_forward_relations
        instance._removed_relations = removed_relations
  
          return instance
  
      def from_native(self, data, files):
keep add keep keep keep keep
 one-many writable nested modelserializer support 
rest_framework/serializers.py