Dubbo3.1 找不到ServiceBeanExportedEvent的监听器

环境信息

Dubbo version: 3.1.0-SNAPSHOT Operating System version: windows11 Java version: 11

步骤重现

1、org.apache.dubbo.config.spring.ServiceBean#publishExportEvent()代码如下：

private void publishExportEvent() {
    ServiceBeanExportedEvent exportEvent = new ServiceBeanExportedEvent(this);
    applicationEventPublisher.publishEvent(exportEvent);
}

但我在3.1分支中并没有找到ServiceBeanExportedEvent的监听器

2、与之类似的，org.apache.dubbo.config.ServiceListener并未找到其有效的实现类，继承者而在ServiceConfig中init()方法如下使用：

public void init() {
    if (this.initialized.compareAndSet(false, true)) {
        // load ServiceListeners from extension
        ExtensionLoader<ServiceListener> extensionLoader = this.getExtensionLoader(ServiceListener.class);
        this.serviceListeners.addAll(extensionLoader.getSupportedExtensionInstances());
    }
    initServiceMetadata(provider);
    serviceMetadata.setServiceType(getInterfaceClass());
    serviceMetadata.setTarget(getRef());
    serviceMetadata.generateServiceKey();
}

debug查看发现serviceListeners为空

那这两处是否为升级过程中的代码冗余？

原提问者GitHub用户conghuhu