src/vs/workbench/browser/parts/activitybar/activitybarPart.ts/FocusActivityBarAction/run
class FocusActivityBarAction:	async run(accessor: ServicesAccessor): Promise<void> {
		const activityBarService = accessor.get(IActivityBarService);
		const layoutService = accessor.get(IWorkbenchLayoutService);
		layoutService.setActivityBarHidden(false);
		activityBarService.focusActivityBar();
	}