Adds gitlab-ci

Closes #3427333

modules/custom_elements_ui/src/Form/EntityCustomElementsDisplayEditForm.php

@@ -18,7 +18,7 @@ use Symfony\Component\DependencyInjection\ContainerInterface;
  * @internal
  *   Form classes are internal.
  */
-class EntityCustomElementsDisplayEditForm extends EntityDisplayFormBase {
+final class EntityCustomElementsDisplayEditForm extends EntityDisplayFormBase {
 
   /**
    * {@inheritdoc}