HarmonyOS 鸿蒙Next stage中getAppVersionInfo怎么用呀

getAppVersionInfo() {
  // this.versionName=App.getInfo().versionName
  bundleManager.getBundleInfoForSelf(bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION)
    .then(bundleInfo => {
      Logger.info('versionName:' + bundleInfo.versionName + ', versionCode:' + bundleInfo.versionCode + ',packageName:' + bundleInfo.name)
      this.versionName = bundleInfo.versionName
      const appInfo = bundleInfo.appInfo
      Logger.info('packageName:' + appInfo.name + ', label:' + appInfo.label + ', description:' + appInfo.description
      + ', icon:' + appInfo.icon + ', process:' + appInfo.process + ', codePath:' + appInfo.codePath)
    })
}