Twig integration in CI4

See https://github.com/kenjis/codeigniter-ss-twig

Hello,
Can you please give an exemple using base_url() in a twig template
like we do in a basic codeigniter view
href="<?= base_url('admin/settings') ?>"

All i found was , in controller
$this->twig->addGlobal('base_url', base_url() );
in template
href="{{ base_url }}/admin/settings"
Thanks