add a todo comment

Author: FynnBe

bioimageio/spec/model/v0_5.py

@@ -1236,6 +1236,14 @@ def validate_output_axes(
     parent: Optional[LinkedModel] = None
     """The model from which this model is derived, e.g. by fine-tuning the weights."""
 
+    # todo: add parent self check once we have `id`
+    # @model_validator(mode="after")
+    # def validate_parent_is_not_self(self) -> Self:
+    #     if self.parent is not None and self.parent == self.id:
+    #         raise ValueError("The model may not reference itself as parent model")
+
+    #     return self
+
     run_mode: Annotated[
         Optional[RunMode], warn(None, "Run mode '{value}' has limited support across consumer softwares.")
     ] = None