indexOfFirstWithHref
Returns the index of the first Link with the given href, or null if not found.
Falls back to ignoring the fragment, then the query too, of href, to stay consistent with Manifest.linkWithHref.
Returns the index of the first Link with the given href, or null if not found.
Falls back to ignoring the fragment, then the query too, of href, to stay consistent with Manifest.linkWithHref.