anchor.diff:  + Request (application/json)
       + Attributes (Plugin_Proxy)
   
  -+ Response 201 (application/json)
  -    + Attributes (SuccessResponse)
  -        + meta (ResponseMeta)
  -            + code: 201
  ++ Response 200 (application/json)
  +    + Attributes (Response_OK)
           + data (Plugin_Proxy)
  +          + name: proxy (string)
   
   ## oAuth Auntenficiation [/apis/{api_id}/plugins/oauth]
   
  
positive.code: 
  + Request (application/json)
      + Attributes (Plugin)
          + settings (PluginSettings_Proxy)
  
  + Response 201 (application/json)
      + Attributes (SuccessResponse)
          + meta (ResponseMeta)
              + code: 201
          + data (Plugin_Proxy)
  
  ### Update Plugin Settings [PUT /apis/{api_id}/plugins/{plugin_name}]
  
negative.code:     + Attributes (API)
  
  + Response 201 (application/json)
      + Attributes (Response_OK)
          + meta (Response__Meta)
              + code: 201 (number)
          + data (API)
  
  + Response 409 (application/json)
      + Attributes (Response_Error)
          + meta (Response__Meta)
              + code: 409
          + error (Response__Error_DuplicateEntity)
  
  ## API [/apis/{api_id}]
  
  