public static List<String> getChildren(ZooKeeperWatcher zkw, String zkNode) {
        try {
            return zkw.getRecoverableZooKeeper().getChildren(zkNode, false);
        } catch (Throwable e) {
            return null;
        }
    }
Get the children data at the specified zkNode.
<p/>
Returns the children data. Returns null if
the node does not exist or there is an exception.

@param zkw   zk reference
@param zkNode path of node
@return children data of the specified zkNode, or null
inlong-tubemq/tubemq-server/src/main/java/org/apache/inlong/tubemq/server/common/zookeeper/ZKUtil.java