namespace Drupal\file\Tests;
+@trigger_error('The ' . __NAMESPACE__ . '\FileFieldTestBase is deprecated in Drupal 8.5.x and will be removed before Drupal 9.0.0. Instead, use \Drupal\Tests\file\Functional\FileFieldTestBase. See https://www.drupal.org/node/2969361.', E_USER_DEPRECATED);
+
use Drupal\field\Entity\FieldStorageConfig;
use Drupal\field\Entity\FieldConfig;
use Drupal\file\FileInterface;