@After
	public void shutdownRepository() {
		if (repository != null) {
			repository.deleteAll();
		}

	}
Unit tests for {@link ZooKeeperStreamDefinitionRepository}.

@author Eric Bottard
@author David Turanski
@author Gary Russell
@author Mark Fisher
spring-xd-dirt/src/test/java/org/springframework/xd/dirt/stream/zookeeper/ZooKeeperStreamDefinitionRepositoryTests.java