flow-1.0.0-beta8/modules/flow_action/config/schema/flow_action.schema.yml

flow.task.settings.action:
  type: mapping
  label: 'Merge plugin settings'
  mapping:
    replace_tokens:
      type: boolean
      label: 'Replace tokens setting'
    access_check:
      type: string
      label: 'Access check setting'
    action:
      type: ignore
      label: 'Action plugin settings'