Entry of one API's own GET {base}/versions listing (BCF's /bcf/versions, ...). It names versions of THAT api, so it carries no api_id (#5438 review).
GET {base}/versions
/bcf/versions
api_id
Optional
Entry of one API's own
GET {base}/versionslisting (BCF's/bcf/versions, ...). It names versions of THAT api, so it carries noapi_id(#5438 review).