src/vs/workbench/contrib/notebook/browser/view/renderers/cellRenderer.ts/ListTopCellToolbar/getCellToolbarActions
class ListTopCellToolbar:	private getCellToolbarActions(menu: IMenu, alwaysFillSecondaryActions: boolean): { primary: IAction[], secondary: IAction[]; } {
		const primary: IAction[] = [];
		const secondary: IAction[] = [];
		const result = { primary, secondary };

		createAndFillInActionBarActions(menu, { shouldForwardArgs: true }, result, g => /^inline/.test(g));

		return result;
	}