if (StringUtils.isEmpty(r.getUserPart().toString())) { continue; }
    protected List generateAliases(String identity, String domain) {        List calls = getCalls();        List aliases = new ArrayList(calls.size());        ForkQueueValue q = new ForkQueueValue(calls.size());        for (Iterator i = calls.iterator(); i.hasNext();) {            AbstractRing r = (AbstractRing) i.next();            String contact = r.calculateContact(domain, q, true);            AliasMapping alias = new AliasMapping(identity, contact);            aliases.add(alias);        }        return aliases;    }