@Override
    public void onUpdated(final MetaDataDO metaDataDO, final MetaDataDO before) {
        publish(new MetadataUpdatedEvent(metaDataDO, before, SessionUtil.visitorName()));
    }
on meta data updated.

@param metaDataDO selector
@param before   before selector
shenyu-admin/src/main/java/org/apache/shenyu/admin/service/publish/MetaDataEventPublisher.java