HarmonyOS 如何获取版本信息？

bundleManager.getBundleInfoForSelf(bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION).then((bundleInfo)=>{ 
  console.log("bundleInfo is " + bundleInfo) 
}).catch((error: BusinessError)=>{ 
  console.error("get bundleInfo failed,error is "+error) 
})

bundleManager.getBundleInfoForSelf(bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION).then((bundleInfo)=>{ 
  console.log("versionCode  is " + bundleInfo.versionCode) 
  console.log("versionName   is " + bundleInfo.versionName) 
}).catch((error: BusinessError)=>{ 
  console.error("get bundleInfo failed,error is "+error) 
})