public synchronized void start()

in 2-advanced/dubbo-samples-async/dubbo-samples-async-simple-boot/dubbo-samples-async-simple-boot-provider/src/main/java/org/apache/dubbo/async/boot/provider/EmbeddedZooKeeper.java [166:172]

• 7 lines of code
• 2 McCabe index (conditional complexity)

    public synchronized void start() {
        if (zkServerThread == null) {
            zkServerThread = new Thread(new ServerRunnable(), "ZooKeeper Server Starter");
            zkServerThread.setDaemon(daemon);
            zkServerThread.start();
        }
    }