AsyncOperation(
            NGCSerializerContext context
            )
        {
            if (context == null)
            {
            }

            switch (context.Action)
            {
            case SerializerAction.endPersistObjectData:
            {
                EndPersistObjectData();

                XpsSerializationProgressChangedEventArgs e =
                    new XpsSerializationProgressChangedEventArgs(XpsWritingProgressChangeLevel.FixedDocumentSequenceWritingProgress,
                                                                 0,
                                                                 0,
                                                                 null);
                NgcSerializationManager.OnNGCSerializationProgressChanged(e);

                break;
            }

            default:
            {
                base.AsyncOperation(context);
                break;
            }
            }
        }