anchor.diff:    @override
     int get hashCode => uri.hashCode;
   
  -  bool get isReady => linked != null;
  -
     String get linkedHash {
       _linkedHash ??= driver._linkedHashMap.putIfAbsent(uri, () {
         computeTransitiveDependencies();
  
positive.code:   List<_LibraryNode> _dependencies;
    String _linkedHash;
  
    List<int> linkedNewBytes;
    PackageBundle linked;
  
    _LibraryNode(this.driver, this.nodes, this.uri);
  
    /**
  
negative.code:           List<int> bytes = _byteStore.get(key);
            if (bytes != null) {
              PackageBundle linked = new PackageBundle.fromBuffer(bytes);
              store.addBundle(null, linked);
              numberOfNodesWithLinked++;
            } else {
  