use Drupal\Core\Url;
use Drupal\language\Entity\ConfigurableLanguage;
use Drupal\Component\Utility\SafeMarkup;
-use Drupal\system\Tests\Cache\AssertPageCacheContextsAndTagsTrait;
+use Drupal\Tests\system\Functional\Cache\AssertPageCacheContextsAndTagsTrait;
/**
* Tests the Content Translation UI.