$comment: 'For any new items added, ensure they are added under ''class'' of ''UnknownRequirement''
  as well.

  Otherwise, insufficiently restrictive classes could cause multiple matches, failing
  the ''oneOf'' condition.

  '
oneOf:
- $ref: https://ogcincubator.github.io/bblocks-cwl/build/annotated/cwl/v1_2_1/CWLRequirementsItem/schema.yaml
- $ref: https://ogcincubator.github.io/bblocks-cwl/build/annotated/cwl/v1_2_1/CWLHintsItemExtras/schema.yaml
title: CWLHintsItem