anchor.diff:      }
       _loaded = true;
       loading = false;
  -
  +    runnable = map['runnable'] == true;
       _upgradeCollection(map, isolate);
       originNumber = int.parse(map['_originNumber'], onError:(_) => null);
       rootLibrary = map['rootLib'];
  
positive.code:       clazz = map['class'];
      }
  
      // Load the full class object.
      clazz?.load();
  
      if (mapIsRef) {
        return;
  
negative.code:   @observable bool running = false;
    @observable bool idle = false;
    @observable bool loading = true;
    @observable bool runnable = false;
    @observable bool ioEnabled = false;
  
    final List<String> extensionRPCs = new List<String>();
  