how to set pod-metadata

[jbehling]

Description
I'm struggling to find a way to set the metadata for a closure as in this example: https://github.com/argoproj/argo/blob/master/examples/pod-metadata.yaml. It appears that metadata isn't a valid field for any of the union types that closure supports. Is there something that I'm missing?

Additional context

[binarycrayon]

@jbehling does this help? https://github.com/argoproj-labs/argo-python-dsl/blob/master/tests/workflows/loops.py

[jbehling]

no the issue I'm having is that there's no way to set the metadata attribute of the template object, at the time i opened the issue it appeared that this was due to some issue in the openapi spec