u'http://localhost/a/b/d/e'

        Args:
            href (unicode): A string representing a clicked URL.

        Return:
            URL: A copy of the current URL with navigation logic applied.

        For more information, see `RFC 3986 section 5`_.

        .. _RFC 3986 section 5: https://tools.ietf.org/html/rfc3986#section-5
        z