wse-1.0.x-dev/modules/wse_preview/config/schema/wse_preview.schema.yml

wse_preview.settings:
  type: config_object
  strict: true
  mapping:
    preview_expiry_default:
      label: 'Default value for the workspace preview expiry.'
      type: string
      nullable: true
      constraints:
        ValidPreviewExpiryPeriod: []