anchor.diff:    bool get isRedirect => false;
   
     @override
  -  StreamSubscription<List<int>> listen(void Function(List<int> event) onData, { Function onError, void Function() onDone, bool cancelOnError }) {
  -    return const Stream<List<int>>.empty().listen(onData, onError: onError, onDone: onDone, cancelOnError: cancelOnError);
  +  StreamSubscription<Uint8List> listen(void Function(Uint8List event) onData, { Function onError, void Function() onDone, bool cancelOnError }) {
  +    return const Stream<Uint8List>.empty().listen(onData, onError: onError, onDone: onDone, cancelOnError: cancelOnError);
     }
   
     @override
  
positive.code: 
    @override
    int get statusCode => 400;
  }
  
  /// A mocked [HttpHeaders] that ignores all writes.
  
negative.code: }
  
  /// A mocked [HttpClientResponse] which is empty and has a [statusCode] of 400.
  // TODO(tvolkert): Change to `extends Stream<Uint8List>` once
  // https://dart-review.googlesource.com/c/sdk/+/104525 is rolled into the framework.
  class _MockHttpResponse implements HttpClientResponse {
    final Stream<Uint8List> _delegate = Stream<Uint8List>.fromIterable(const Iterable<Uint8List>.empty());
  
    @override
    final HttpHeaders headers = _MockHttpHeaders();
  
  