anchor.diff:      print('$source, $nickname');
       var sourceFile = new File.fromUri(new Uri.file(source));
       print('$sourceFile');
  -    //Future<File> copyFuture = sourceFile.copy('../tmp/test.txt');
       
       var tmpDir = new Directory('tmp');
       tmpDir.createSync();
  
positive.code:       }
          
      }
      //var JSONoutput = JSON.encode(nicknames);
      return new JSONResponse(nicknames);
    }
    shelf.Response Upload(shelf.Request req){
  
negative.code:     var nickname = req.url.queryParameters["nickname"];
      var source = req.url.queryParameters["source"];
      print('$source, $nickname');
      
  
      return new SuccessResponse();
    }
    
  