Zip Archiver does not create a new zip file if it does not exist

$archiver_manager = \Drupal::service('plugin.manager.archiver');
$zip_archive = $archiver_manager->getInstance(['filepath' => './testzip.zip']);

I execute the above code using drush scr command but it does not create a new ZIP file for me.
Shows: Cannot open <em class="placeholder">./testzip.zip</em>

/core/lib/Drupal/Core/Archiver/Zip.php class constructor states that If the file does not yet exist, it will be created if appropriate. But it does not does so under any circumstance.

Example code for ZipArchive given in PHP.net makes use of the ZipArchive::CREATE flag when opening a file, so that a new file is created if it does not exist.

Probably we need to do the same.