description: 401 Unauthorized
content:
  application/json:
    schema:
      type: object
      properties:
        error:
          $ref: ../schemas/google-cloud-api.error.error-unauthenticated.yaml
    examples:
      not_authenticated:
        $ref: ../examples/google-cloud-api.error-unauthenticated.yaml
      token_expired:
        $ref: ../examples/google-cloud-api.error-token_expired.yaml