public static function get(ContainerInterface $container) {
    $storage_type = $container
      ->get('config.factory')
      ->get('acm.commerce_users')
      ->get('storage_type');

    switch ($storage_type) {
      case 'database_store':
        $storage = $container
          ->get('acm.database_session_store')
          ->get('acm');
        break;

      default:
        $storage = $container
          ->get('acm.php_session_store');
        break;
    }

    return $storage;
  }