src/vs/workbench/contrib/notebook/browser/contrib/cellStatusBar/executionStatusBarItemController.ts/TimerCellStatusBarContrib/constructor
class TimerCellStatusBarContrib:	constructor(
		notebookEditor: INotebookEditor,
		@IInstantiationService instantiationService: IInstantiationService) {
		super();
		this._register(new NotebookStatusBarController(notebookEditor, (vm, cell) => instantiationService.createInstance(TimerCellStatusBarItem, vm, cell)));
	}