src/vs/workbench/contrib/notebook/browser/contrib/cellStatusBar/executionStatusBarItemController.ts/ExecutionStateCellStatusBarItem/constructor
class ExecutionStateCellStatusBarItem:	constructor(
		private readonly _notebookViewModel: INotebookViewModel,
		private readonly _cell: ICellViewModel,
		@INotebookExecutionStateService private readonly _executionStateService: INotebookExecutionStateService
	) {
		super();

		this._update();
		this._register(this._executionStateService.onDidChangeCellExecution(e => {
			if (e.affectsCell(this._cell.uri)) {
				this._update();
			}
		}));
		this._register(this._cell.model.onDidChangeInternalMetadata(() => this._update()));
	}