protected function importMediaImages() {
    $data = $this->loadDataArray('media_image');
    if (!empty($data)) {

      $uuids = [];

      foreach ($data as $item) {

        // Prepare content.
        $values = [
          'bundle' => $item['bundle'],
          'name' => $item['name'],
        ];

        $file = $this->saveFile($item['file']);

        if (!empty($file) && $file instanceof File) {
          $values['field_media_image'] = [
            'target_id' => $file->id(),
            'alt' => $item['alt'],
          ];
        }

        // Set author.
        $values['uid'] = 1;

        // Create Media.
        $entity = $this->entityTypeManager->getStorage('media')->create($values);
        $entity->save();
        $uuids[$entity->uuid()] = 'media';
      }
      $this->storeCreatedContentUuids($uuids);
    }
    return $this;
  }