for(Iterator i = instances.values().iterator(); i.hasNext(); ) ((BrokerPool)i.next()).shutdown();
BrokerPool instance; for (Iterator i = instances.values().iterator(); i.hasNext();) { instance = (BrokerPool)i.next(); if(instance.conf != null) instance.shutdown(); }
	public final static void stopAll() {		for(Iterator i = instances.values().iterator(); i.hasNext(); )			((BrokerPool)i.next()).shutdown();		instances.clear();	}