Further Drupal 8.6.4 changes. Some core files were not committed before a commit...

[yaffs-website] / web / core / modules / system / tests / themes / test_subtheme / config / schema / test_subtheme.schema.yml

test_subtheme.settings:
  type: theme_settings
  label: 'Test sub theme settings'
  mapping:
    override:
      type: string
      label: 'Whether the setting has been overridden'