private void init() throws IOException {
		YamlPropertiesFactoryBean ypfb = new YamlPropertiesFactoryBean();
		ypfb.setResources(new FileSystemResource(System.getProperty("spring.config.location")));
		Properties conf = ypfb.getObject();
		if (conf.containsKey(ZK_NAMESPACE)) {
			zkNamespace = (String) conf.get(ZK_NAMESPACE);
		}
		if (conf.containsKey(ZK_CLIENT_CONNECT)) {
			zkClientConnect = (String) conf.get(ZK_CLIENT_CONNECT);
		}
		zk = new ZooKeeper(zkClientConnect, 5000,
				new Watcher() {
					@Override
					public void process(WatchedEvent event) {
					}
				});
	}
Call super constructor for new {@link org.springframework.boot.cli.command.AbstractCommand} instance.
spring-xd-yarn/spring-xd-yarn-client/src/main/java/org/springframework/xd/yarn/XdYarnAdminInfoCommand.java