Links within [up-nav] may use the [up-alias] attribute to pass a URL pattern for which they
should also be highlighted as .up-current.
Example
The link below will be highlighted with .up-current at both /profile and /profile/edit locations:
<div up-nav>
<a href="/profile" up-alias="/profile/edit">Profile</a>
</div>
To pass more than one alternative URLs, use a URL pattern.
