Returns a link to verba.  The link varies by campus and schedule.
        Multiple calls to this with the same schedule may result in
        different urls.

def get_verba_link_for_schedule(self, schedule):
        """
        Returns a link to verba.  The link varies by campus and schedule.
        Multiple calls to this with the same schedule may result in
        different urls.
        """
        dao = Book_DAO()

        url = self.get_verba_url(schedule)

        response = dao.getURL(url, {"Accept": "application/json"})
        if response.status != 200:
            raise DataFailureException(url, response.status, response.data)

        data = json.loads(response.data)

        for key in data:
            if re.match(r'^[A-Z]{2}[0-9]{5}$', key):
                return "%s%s&quarter=%s" % (BOOK_PREFIX,
                                            key,
                                            schedule.term.quarter)