Request for 'confirmed' role

use Drupal\Core\Access\AccessResult;
use Drupal\node\NodeInterface;
use Drupal\Core\Session\AccountInterface;

/**
* Implements hook_node_access().
*/
function mymodule_node_access(NodeInterface $node, $op, AccountInterface $account) {
$langcode = \Drupal::languageManager()->getCurrentLanguage()->getId();
if (!$node->hasTranslation($langcode)) {
$access = AccessResult::forbidden();
}
else {
$access = AccessResult::neutral();
}
$access->addCacheableDependency($node);
return $access;
}