anchor.diff:  
   + Response 204
   
  ++ 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
  
positive.code:         + value: hello world (string, required)
          + meta (object, required) - metadata of the requested path
  
  + Response 401 (application/json)
      + Attributes (Error)
          + i18n
  
negative.code: this is the same as calling `kdb rm {path}`
  
  + Response 204
  
  + 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)
  