src/vs/workbench/contrib/notebook/browser/services/notebookWorkerServiceImpl.ts/NotebookWorkerClient/constructor
class NotebookWorkerClient:	constructor(private readonly _notebookService: INotebookService, label: string) {
		super();
		this._workerFactory = new DefaultWorkerFactory(label);
		this._worker = null;
		this._modelManager = null;

	}