@Override
	public void delete(Stream entity) {
		Assert.notNull(entity, "stream must not be null");
		delete(entity.getDefinition().getName());
	}
Stream instance repository. It should only return values for Streams that are deployed.

@author Mark Fisher
@author Gunnar Hillert
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/stream/zookeeper/ZooKeeperStreamRepository.java