anchor.diff:      }
     }
   
  -  static Future forking(
  -      String name, List args, Context context, NextInvokeHandler next) {
  -    final completer = Completer();
  +  static Future<Uint8List> forking(
  +      Uint8List request, Context context, NextIOHandler next) {
  +    final completer = Completer<Uint8List>();
       final clientContext = context as ClientContext;
       final uris = clientContext.client.uris;
       final n = uris.length;
  
positive.code:     for (var i = 0; i < n; ++i) {
        final forkingContext = clientContext.clone() as ClientContext;
        forkingContext.uri = uris[i];
        next(name, args, forkingContext).then((value) {
          completer.complete(value);
        }, onError: (error, stackTrace) {
          if (--count == 0) {
  
negative.code: |                                                          |
  | Cluster plugin for Dart.                                 |
  |                                                          |
  | LastModified: Mar 28, 2020                               |
  | Author: Ma Bingyao <andot@hprose.com>                    |
  |                                                          |
  \*________________________________________________________*/
  