anchor.diff:      var source = req.url.queryParameters["source"];
       print('$source, $nickname');
       var tempFile = new File.fromUri(new Uri.file('../tmp/test.txt'));
  +    
  +    /*
       Future<File> copyFuture = tempFile.copy(source);
       copyFuture.catchError((fail){
         return new FailResponse();
       });
  -    
  +    */
       return new SuccessResponse();
     }
     
  
positive.code:         Destination string
          Nickname    string
      },...]
      */ 
      return new JSONResponse([]);
    }
    shelf.Response Files(shelf.Request req){
      return new JSONResponse([]);
    }
    shelf.Response Upload(shelf.Request req){
      var nickname = req.url.queryParameters["nickname"];
  
negative.code: 
  import 'dart:io';
  import 'dart:async';
  import "dart:convert";
  import 'package:shelf/shelf.dart' as shelf;
  import 'package:shelf/shelf_io.dart' as io;
  
  