@Override
    public void onDeleted(final Collection<PluginHandleDO> plugins) {
        publish(new BatchPluginHandleChangedEvent(plugins, null, EventTypeEnum.PLUGIN_HANDLE_DELETE, SessionUtil.visitorName()));
    }
on plugin deleted.

@param plugins plugins
shenyu-admin/src/main/java/org/apache/shenyu/admin/service/publish/PluginHandleEventPublisher.java