attribution-1.0.x-dev/attribution.links.action.yml

entity.attribution_license.add_form:
  route_name: 'entity.attribution_license.custom_add_form'
  title: 'Add license'
  appears_on:
    - entity.attribution_license.collection
entity.attribution_license.custom_add_form:
  route_name: 'entity.attribution_license.add_form'
  title: 'Add custom license'
  appears_on:
    - entity.attribution_license.collection