src/vs/workbench/api/browser/mainThreadNotebook.ts/MainThreadNotebooks/constructor
class MainThreadNotebooks:	constructor(
		extHostContext: IExtHostContext,
		@INotebookService private readonly _notebookService: INotebookService,
		@INotebookCellStatusBarService private readonly _cellStatusBarService: INotebookCellStatusBarService,
		@ILogService private readonly _logService: ILogService,
	) {
		this._proxy = extHostContext.getProxy(ExtHostContext.ExtHostNotebook);
	}