Allow properties on $ref objects for OpenAPI 3.1. #958
+39
−8
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JSON Schema draft 5 (OpenAPI 3.0.4), it specifically says additional properties on a $ref object are ignored.
https://datatracker.ietf.org/doc/html/draft-wright-json-schema-00#section-7
However, draft 2020-12 (OpenAPI 3.1.0) seems to have changed its tune:
https://datatracker.ietf.org/doc/html/draft-bhutton-json-schema-00#section-8.2.3.1
So if I'm understanding correctly, things like this are now valid and meaningful: