anchor.diff:      + Attributes (User Preview)
   
   + Response 400 (application/json)
  -    + Attributes (object)
  -        + status (string) - Textual description of the HTTP status
  -        + message (string) - Detailed error information, e.g. hint about malformed request
  +    + Attributes (Error Response)
           + i18n (string) - A unique token representing above error description message; can be used for internationalization in frontends
   
               A comprehensive list of possible errors:
               - `NO_CURRENT_USER` if the user details of the currently authenticated user were requested, but no authentication is active
   
   + Response 401 (application/json)
  -    + Attributes (object)
  -        + status (string) - Textual description of the HTTP status
  -        + message (string) - Detailed error information, e.g. hint about malformed request
  +    + Attributes (Error Response)
           + i18n (string) - A unique token representing above error description message; can be used for internationalization in frontends
   
               A comprehensive list of possible errors:
  
positive.code:         + token (string) - The session token which can be used to authenticate against the server in further requests
  
  + Response 400 (application/json)
      + Attributes (object)
          + status (string) - Textual description of the HTTP status
          + message (string) - Detailed error information, e.g. hint about malformed request
          + i18n (string) - A unique token representing above error description message; can be used for internationalization in frontends
  
              A comprehensive list of possible errors:
  
negative.code:             - `USER_CREATED_SUCCESSFULLY` if the account has been created successfully
          
  + Response 400 (application/json)
      + Attributes (Error Response)
          + i18n (string) - A unique token representing above error description message; can be used for internationalization in frontends
  
              A comprehensive list of possible errors:
  