src/vs/workbench/contrib/notebook/browser/services/notebookServiceImpl.ts/NotebookService/registerNotebookSerializer
class NotebookService:	registerNotebookSerializer(viewType: string, extensionData: NotebookExtensionDescription, serializer: INotebookSerializer): IDisposable {
		this.notebookProviderInfoStore.get(viewType)?.update({ options: serializer.options });
		return this._registerProviderData(viewType, new SimpleNotebookProviderInfo(viewType, serializer, extensionData));
	}