public void setAdminAddresses(String[] adminAddresses) {
		this.adminAddresses = Arrays.copyOf(adminAddresses, adminAddresses.length);
	}
Set the bus's default max consumers; can be overridden by consumer.maxConcurrency. Values less than 'concurrency'
will be coerced to be equal to concurrency.
@param defaultMaxConcurrency The default max concurrency.
spring-xd-messagebus-rabbit/src/main/java/org/springframework/xd/dirt/integration/rabbit/RabbitMessageBus.java