parameters:
  - in: query
    name: code
    required: true
    schema:
      type: string

responses:
  200:
    content:
      text/html:
        schema:
          type: string

  404:
    content:
      text/html:
        schema:
          type: string

  498:
    description: expired
    content:
      application/json:
        schema:
          type: object
          properties: {}