HarmonyOS 鸿蒙Next fs.copy方法是否能够实现多级文件夹的完整拷贝？

this.context.area = contextConstant.AreaMode.EL2;
let ceSourcePath = this.context.backupDir + “restore/com.yuntu.constructioncalculators/ce/”;
let targetPath = this.context.getApplicationContext().filesDir;

let srcPicDir = ceSourcePath + ‘customPic’;
let dstPicDir = targetPath + ‘/customPic’;
let srcPicDirUri: string = fileUri.getUriFromPath(srcPicDir);
let dstPicDirUri: string = fileUri.getUriFromPath(dstPicDir);

let progressListener: fs.ProgressListener = (progress: fs.Progress) => {
  console.info(progressSize: ${progress.processedSize}, totalSize: ${progress.totalSize});
};
let copyOption: fs.CopyOptions = {
  “progressListener”: progressListener
};
try {
  fs.copy(srcPicDirUri, dstPicDirUri, copyOption).then(() => {
    console.info("Succeeded in copying. ");
  }).catch((err: BusinessError) => {
    console.error(Failed to copy: ${JSON.stringify(err)});
  })
} catch (err) {
  console.error(Failed to copy: ${JSON.stringify(err)});
}