+ /**
+ * Returns the messenger.
+ *
+ * @return \Drupal\Core\Messenger\MessengerInterface
+ * The messenger.
+ */
+ public static function messenger() {
+ // @todo Replace with service once LegacyMessenger is removed in 9.0.0.
+ // @see https://www.drupal.org/node/2928994
+ return new LegacyMessenger();
+ }
+