Problem description

The current syntax with description under allOf was reported to cause problems with generators

        sinkCredential:
          allOf:
            - description: A sink credential provides authentication or authorization information necessary to enable delivery of events to a target.
            - $ref: "#/components/schemas/SinkCredential"

Expected behavior
In this case description could be moved to SinkCredential schema; as it is generic enough to be reused in the 2 $ref to this schema, and the allOf above can be removed.