public void unregisterListener(ZooKeeperListener listener) {
        int i = 0;
        boolean exists = false;
        for (ZooKeeperListener listenerOfList : this.listeners) {
            if (listenerOfList.equals(listener)) {
                exists = true;
                break;
            }
            i++;
        }
        if (exists) {
            listeners.remove(i);
        }
    }
Get the quorum address of this instance.

@return quorum string of this zookeeper connection instance
inlong-tubemq/tubemq-server/src/main/java/org/apache/inlong/tubemq/server/common/zookeeper/ZooKeeperWatcher.java