NotificationSender sender = null;
sender = new NotificationSender(brokerLocation, topic);
int consumerPort = TestUtilServer.getAvailablePort();
String[] consumerEPRs = brokerClient.startConsumerService(consumerPort, this);
// subscribing to the above created messsage box with configured topic
String subscriptionID = brokerClient.subscribe(consumerEPRs[0], topic, null);
sender.workflowStarted("Workflow Started");