anchor.diff:          HeapSnapshotObjectNoData,
           HeapSnapshotObjectNullData;
   
  -const String vmServiceVersion = '3.60.0';
  +const String vmServiceVersion = '3.61.0';
   
   /// @optional
   const String optional = 'optional';
  
positive.code:   bool operator ==(Object other) => other is IsolateRef && id == other.id;
  
    String toString() => '[IsolateRef ' //
        'id: ${id}, number: ${number}, name: ${name}, isSystemIsolate: ${isSystemIsolate}]';
  }
  
  /// An `Isolate` object provides information about one isolate in the VM.
  
negative.code:     number = json['number'] ?? '';
      name = json['name'] ?? '';
      isSystemIsolate = json['isSystemIsolate'] ?? false;
      isolateGroupId = json['isolateGroupId'] ?? '';
    }
  
    @override
  