anchor.diff:  
   + Response 400 (application/json)
       + Attributes (Error)
  -        + i18n
  +        + i18n (string)
               A comprehensive list of possible errors:
               - `APIKEY_MISSING` api key not specified
   
   + Response 401 (application/json)
       + Attributes (Error)
  -        + i18n
  +        + i18n (string)
               A comprehensive list of possible errors:
               - `NEED_AUTHENTICATION` if no valid apikey has been supplied
   
   + Response 404 (application/json)
       + Attributes (Error)
  -        + i18n
  +        + i18n (string)
               A comprehensive list of possible errors:
               - `PATH_NOT_FOUND` if the requested path does not exist in the key database
   
   + Response 406 (application/json)
       + Attributes (Error)
  -        + i18n
  +        + i18n (string)
               A comprehensive list of possible errors:
               - `REQUEST_UNSUPPORTED_CONTENT_TYPE` if the submitted Content-Type is not `application/json` or `text/plain`
   
  
positive.code: 
  + Response 400 (application/json)
      + Attributes (Error)
          + i18n
              A comprehensive list of possible errors:
              - `APIKEY_MISSING` api key not specified
  
  + Response 401 (application/json)
      + Attributes (Error)
          + i18n
              A comprehensive list of possible errors:
              - `NEED_AUTHENTICATION` if no valid apikey has been supplied
  
  + Response 404 (application/json)
      + Attributes (Error)
          + i18n
              A comprehensive list of possible errors:
              - `PATH_NOT_FOUND` if the requested path does not exist in the key database
  
  
negative.code: 
  + Response 400 (application/json)
      + Attributes (Error)
          + i18n (string)
              A comprehensive list of possible errors:
              - `APIKEY_MISSING` api key not specified
  
  + Response 401 (application/json)
      + Attributes (Error)
          + i18n (string)
              A comprehensive list of possible errors:
              - `NEED_AUTHENTICATION` if no valid apikey has been supplied
  
  + Response 404 (application/json)
      + Attributes (Error)
          + i18n (string)
              A comprehensive list of possible errors:
              - `PATH_NOT_FOUND` if the requested path does not exist in the key database
  
  