@Override
	public void deleteAll() {
		try {
			delete(findAll());
		}
		catch (Exception e) {
			//NoNodeException - nothing to delete
			ZooKeeperUtils.wrapAndThrowIgnoring(e, NoNodeException.class);
		}
	}
The key used in serialized properties to hold the parsed module definitions that make up a stream.
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/stream/zookeeper/ZooKeeperStreamDefinitionRepository.java