The same source can be rendered as Mule custom policy bundle assets: a descriptor YAML, policy template XML, and packaged .zip / .jar.
Generated policy descriptor:
Code include not found: ../build/sample-custom-policy/policies/verifyapikey-1/policy.yaml
Generated policy template:
Code include not found: ../build/sample-custom-policy/policies/verifyapikey-1/verifyapikey-1-template.xml