cacheflush-8.x-1.x-dev/modules/cacheflush_ui/cacheflush_ui.links.action.yml

entity.cacheflush.add_form:
  route_name: entity.cacheflush.add_form
  title: 'Add Cacheflush entity'
  appears_on:
    - entity.cacheflush.collection
    - entity.cacheflush.canonical