src/vs/platform/undoRedo/common/undoRedoService.ts/UndoRedoService/constructor
class UndoRedoService:	constructor(
		@IDialogService private readonly _dialogService: IDialogService,
		@INotificationService private readonly _notificationService: INotificationService,
	) {
		this._editStacks = new Map<string, ResourceEditStack>();
		this._uriComparisonKeyComputers = [];
	}