anchor.diff:      let token = Utils.requestAppOnlyToken consumer_key consumer_secret
       Twitter(AppContext { AppOnlyToken = token })
   
  +  static member AuthenticateAppSingleUser (consumer_key, consumer_secret, access_token, access_secret) = 
  +    Twitter(
  +      UserContext { 
  +              ConsumerKey = consumer_key;
  +              ConsumerSecret = consumer_secret;
  +              AccessToken = access_token;
  +              AccessSecret = access_secret; })
  +
     member twitter.Timelines = Timelines(context)
     member twitter.Streaming = Streaming(context)
     member twitter.Search = Search(context)
  
positive.code:           Utils.addAuthHeaderForApp this originalUrl appToken queryParams
        | UserContext {ConsumerKey = ck; ConsumerSecret = cs; AccessToken = ack; AccessSecret = acs} ->
            Utils.addAuthHeaderForUser this originalUrl ck cs ack acs queryParams
  
  
  // ----------------------------------------------------------------------------------------------
  
  
negative.code: open FSharp.Control
  open FSharp.WebBrowser
  
  // ----------------------------------------------------------------------------------------------
  
  module internal Utils = 
  