docs: void unpack(File src, String destPath, UnpackUpdateTask.ProgressUpdateListener updateListener) {
      new UnpackerTask(offlineNavigator).executeOnExecutor(
        AsyncTask.THREAD_POOL_EXECUTOR, src.getAbsolutePath(), destPath + File.separator);
      new UnpackUpdateTask(updateListener).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, src);
    }