By default the state will include a csrf value that is stored in the as json object as well as the session in order to prevent cross site request forgery. You may use this method to add additional members to the state json object.
Start the authorization process
This callback gets called after authorization is successful. Required for all OAuth flows.
This callback gets called for errors. The default actions is:
throw new OAuthException(errorMssg);`
Use this method if you need to add to the oauthSetup before calling authorize
The OAuth User to use. If userRelateDataStore is false the credentials will be stored in the session.
TODO
Example