anchor.diff:      request.headers.set('Authorization', authorization);
       request.headers.set('User-Agent', 'OAuth gem v0.4.4');
       request.headers.set('accept', '*/*');
  -
  +    
       return request.close();
     })
     .then((HttpClientResponse response) {
       // Process the response.
  -//    response.listen(print);
  +    //response.listen(print);
       response.transform(UTF8.decoder).listen(handleStream);
     });
   }
  
positive.code: }
  
  
  void handleStream(String value) {
    print(value);  
  }
  
  
  
negative.code: import 'dart:math' as math;
  import 'package:crypto/crypto.dart' as crypto;
  import 'dart:core';
  import 'package:json_object/json_object.dart';
  
  class oauth_twitter {
      String _oauth_consumer_key;   
  