public void onUnsubscribe(String sessionId, WampUnsubscribeMessage wampUnsubscribeMessage) { EventAction e = eventMapping.getAction(wampUnsubscribeMessage.getTopicId()); if (e != null) e.unsubscribe(sessionId); else if (log.isDebugEnabled()) log.debug( "unable to unsubscribe : action name doesn't not exist " + wampUnsubscribeMessage.getTopicId()); }