docs: def build_url_field(self, field_name, model_class):
          """
          Create a field representing the object's own URL.
          """
          field_class = self.serializer_url_field
          field_kwargs = rest_framework.serializers.get_url_kwargs(model_class)
          field_kwargs.update({"parent_lookup_field": self.get_parent_lookup_field()})
          return field_class, field_kwargs