Issue #3554978 by phenaproxima, alexpott: ContentExportCommand::loadEntities()...

   *   A generator that yields content entities.

   */

  private function loadEntities(ContentEntityStorageInterface $storage, string|int|null $entity_id, array $bundles = []): iterable {

    $query = $storage->getQuery()

      ->accessCheck(FALSE);

    $values = [];

    $entity_type = $storage->getEntityType();

    if ($bundles) {

      $query->condition($entity_type->getKey('bundle'), $bundles, 'IN');

      $values[$entity_type->getKey('bundle')] = $bundles;

    }

    if ($entity_id) {

      $query->condition($entity_type->getKey('id'), $entity_id);

    }

    foreach ($query->execute() as $id) {

      yield $storage->load($id);

      $values[$entity_type->getKey('id')] = $entity_id;

    }

    return $storage->loadByProperties($values);

  }

}