anchor.diff:    oauth.Token consumer;
     oauth.Token user;
   
  -  static TwitterKey createKey(String consumerKey,String consumerSecret,
  +  TwitterKey.createKey(String consumerKey,String consumerSecret,
                                 String accessToken,String accessSecret) {
   
  -    oauth.Token consumer = createToken(consumerKey,consumerSecret);
  -    oauth.Token user = createToken(accessToken,accessSecret);
  +    this.consumer = createToken(consumerKey,consumerSecret);
  +    this.user = createToken(accessToken,accessSecret);
  +  }
   
  -    return new TwitterKey()
  -        ..consumer = consumer
  -        ..user = user;
  -
  -  }
   }
   
   oauth.Token createToken(String key, String secret) {
  
positive.code: 
  
  main() {
    String consumerKey    = "QSW4maKbx5jsWzDLxg48DPsO6";
    String consumerSecret = "xCLaSQcJPc3Mj4ATSFpsBUhCSlA81P2QPD7Ayc3c411x7sUrte";
    String accessKey      = "195336429-GNz0lzQybqlLpX6xLKjeAO8H33aI2738ZAo6C79e";
    String accessSecret   = "2E4oUKx0ftBilcnrPif4b6UM8JgePJjzQ17g86qvdNrQE";
    
    TwitterKey key = TwitterKey.createKey(consumerKey, consumerSecret, accessKey, accessSecret);
   
    var comp    = new Completer();
    var client  = new oauth.Client(key.consumer);
    client.userToken = key.user;
    var stream = client.get("https://stream.twitter.com/1.1/statuses/sample.json").asStream();
    
    stream.transform(UTF8.decoder)
          .transform(const LineSplitter())
          .listen((value) {
            print("value: $value");
    });
  
   
   /*
    .then((response){
              if (response.statusCode == 200 || response.statusCode == 201){
                print("It works\n");
                comp.complete(JSON.decode(response.body));
              }
              else {
                print("Needs repair.\n");
              }
      });
    
    * 
     */
    print("Hello\n");
  }
  
negative.code: import 'dart:async';
  import 'dart:convert';
  import 'package:oauth/oauth.dart' as oauth;
  import 'dart:io';
  import 'package:json_object/json_object.dart';
  
  class TwitterKey {
  