private Collection<?> getBindingsFromMsgBus(MessageBus messageBus) {
		DirectFieldAccessor accessor = new DirectFieldAccessor(messageBus);
		return (List<?>) accessor.getPropertyValue("bindings");
	}
@author Gary Russell
@author Ilayaperumal Gopinathan
@author David Turanski
spring-xd-dirt/src/test/java/org/springframework/xd/dirt/integration/bus/AbstractMessageBusTests.java