anchor.diff:     */
     bool isDerived() => parent != null && parent.isDerived();
   
  -  bool isSyncResource() => workspace.isSyncResource(this);
  -
     /**
      * Returns an iterable of the children of the resource as a pre-order traversal
      * of the tree of subcontainers and their children.
  
positive.code:     });
    }
  
    bool isSyncResource(Resource resource) {
      return _roots.any((root) => root is SyncFolderRoot && root.resource == resource);
    }
  
  
negative.code: 
    String get uuid => '${_root.id}';
  
    bool isSyncResource() => workspace._isSyncResource(this);
  
    Future refresh() {
      // Only allow one refresh call at a time.
      assert(_inRefresh == false);
  