@Override
			public void poll(DeploymentMessage message) {
				// todo: the "real" implementation of poll waits until
				// the deployment message has been processed; this
				// should be revisited to see if/how the same behavior
				// can be mimicked
				publish(message);
			}
Provide a mockito mock for any of the business layer dependencies. Adding yet another configuration class on top, one
can selectively override those mocks (with <i>e.g.</i> in memory implementations).

@author Eric Bottard
@author Ilayaperumal Gopinathan
spring-xd-dirt/src/test/java/org/springframework/xd/dirt/rest/Dependencies.java