{{tab-nav
    items=(array
      (hash
        label='Tokens'
        href=(href-to 'dc.acls.tokens')
      )
      (hash
        label='Policies'
        href=(href-to 'dc.acls.policies')
      )
    )
    selected=(if (is-href 'dc.acls.policies') 'policies' 'tokens')
}}