@Override
	public List<StreamDefinition> findAll(Iterable<String> ids) {
		List<StreamDefinition> results = new ArrayList<StreamDefinition>();
		for (String id : ids) {
			StreamDefinition sd = this.findOne(id);
			if (sd != null) {
				results.add(sd);
			}
		}
		return results;
	}
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