src/vs/platform/actions/browser/menuEntryActionViewItem.ts/DropdownWithDefaultActionViewItem/_getDefaultActionKeybindingLabel
class DropdownWithDefaultActionViewItem:	private _getDefaultActionKeybindingLabel(defaultAction: IAction) {
		let defaultActionKeybinding: string | undefined;
		if (this._options?.renderKeybindingWithDefaultActionLabel) {
			const kb = this._keybindingService.lookupKeybinding(defaultAction.id);
			if (kb) {
				defaultActionKeybinding = `(${kb.getLabel()})`;
			}
		}
		return defaultActionKeybinding;
	}