@Override
    public StreamID createStreamID() {
        return factory.createStreamID();
    }
Factory for producing audit stream IDs. We use a factory so that
audit information can be identified using an appropriate storage
key (typically a long for RDBMS).

@author Iain Shigeoka
xmppserver/src/main/java/org/jivesoftware/openfire/audit/AuditStreamIDFactory.java