for (Iterator<BrokerItem> i = brokerList.iterator(); i.hasNext();) {
BrokerService broker = i.next().broker;
List transportConnectors = broker.getTransportConnectors();
if (transportConnectors.isEmpty()) {
broker.addConnector(new URI(AUTO_ASSIGN_TRANSPORT));
transportConnectors = broker.getTransportConnectors();
}
TransportConnector transport = (TransportConnector)transportConnectors.get(0);
transport.setDiscoveryUri(new URI("multicast://default?group=" + groupName));