src/vs/workbench/contrib/notebook/browser/view/cellParts/cellToolbars.ts/CellTitleToolbarPart/constructor
class CellTitleToolbarPart:	constructor(
		private readonly toolbarContainer: HTMLElement,
		private readonly _rootClassDelegate: ICssClassDelegate,
		private readonly toolbarId: MenuId,
		private readonly deleteToolbarId: MenuId,
		private readonly _notebookEditor: INotebookEditorDelegate,
		@IContextKeyService private readonly contextKeyService: IContextKeyService,
		@IMenuService private readonly menuService: IMenuService,
		@IInstantiationService private readonly instantiationService: IInstantiationService,
	) {
		super();
	}