src/vs/workbench/contrib/notebook/browser/contrib/cellStatusBar/executionStatusBarItemController.ts/KeybindingPlaceholderStatusBarItem/constructor
class KeybindingPlaceholderStatusBarItem:	constructor(
		private readonly _notebookViewModel: NotebookViewModel,
		private readonly _cell: ICellViewModel,
		@IKeybindingService private readonly _keybindingService: IKeybindingService,
		@IContextKeyService _contextKeyService: IContextKeyService,
	) {
		super();

		this._codeContextKeyService = this._register(getCodeCellExecutionContextKeyService(_contextKeyService));
		this._update();
		this._register(this._cell.model.onDidChangeInternalMetadata(() => this._update()));
	}