use Drupal\Core\Routing\UrlGeneratorTrait;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\Core\Messenger\MessengerTrait;
/**
* Utility base class for thin controllers.
use LinkGeneratorTrait;
use LoggerChannelTrait;
+ use MessengerTrait;
use RedirectDestinationTrait;
use StringTranslationTrait;
use UrlGeneratorTrait;