public void setDefaultDurableSubscription(boolean defaultDurableSubscription) {
		this.defaultDurableSubscription = defaultDurableSubscription;
	}
Set whether subscriptions to taps/topics are durable.
@param defaultDurableSubscription true for durable (default false).
spring-xd-messagebus-spi/src/main/java/org/springframework/xd/dirt/integration/bus/MessageBusSupport.java