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AppleSignInAuth:
      type: object
      required:
        - client_id
        - client_secret
        - grant_type
        - code
        - redirect_uri
      properties:
        client_id:
          type: string
          description: The application identifier for your app.
        client_secret:
          type: string
          description: A secret generated as a JSON Web Token that uses the secret key generated by the WWDR portal.
        grant_type:
          type: string
          description: The grant type that determines how the client interacts with the server. For authorization code validation, use authorization_code. For refresh token validation requests, use refresh_token.
          enum:
            - authorization_code
            - refresh_token
        code:
          type: string
          description: The authorization code received from your application’s user agent. The code is single use only and valid for five minutes.
        redirect_uri:
          type: string
          description: The destination URI the code was originally sent to. It must include a domain name, and can’t be an IP address or localhost.

AppleSignInError:
      type: object
      required:
        - error
      properties:
        error:
          type: string
          description: A string that describes the reason for the unsuccessful request. The string consists of a single allowed value.
          enum: 
            - invalid_request
            - invalid_client
            - invalid_grant
            - unauthorized_client
            - unsupported_grant_type
            - invalid_scope