$schema: https://git.drupalcode.org/project/drupal/-/raw/HEAD/core/assets/schemas/v1/metadata.schema.json
name: Header
props:
  type: object
  properties:
    extra_classes:
      title: Header extra classes
      type: ['array', 'null']
      items:
        type: string
slots:
  top:
    title: Header top content
  content:
    title: Header content