如何获取app/系统的版本号

import { bundleManager } from '@kit.AbilityKit'; 
 
let bundleFlags = bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION | bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_METADATA; 
bundleManager.getBundleInfoForSelf(bundleFlags).then((data) => { 
  console.info('versionCode: ' + data.versionCode); 
  console.info('versionName: ' + data.versionName); 
})

import { deviceInfo } from '@kit.BasicServicesKit'; 
console.info('displayVersion: ' + deviceInfo.displayVersion); 
console.info('osFullName: ' + deviceInfo.osFullName); 
console.info('versionId: ' + deviceInfo.versionId);