diff -u b/core/modules/aggregator/lib/Drupal/aggregator/Annotation/AggregatorProcessor.php b/core/modules/aggregator/lib/Drupal/aggregator/Annotation/AggregatorProcessor.php
--- b/core/modules/aggregator/lib/Drupal/aggregator/Annotation/AggregatorProcessor.php
+++ b/core/modules/aggregator/lib/Drupal/aggregator/Annotation/AggregatorProcessor.php
@@ -4,6 +4,7 @@
  * @file
  * Contains \Drupal\aggregator\Annotation\AggregatorProcessor.
  */
+
 namespace Drupal\aggregator\Annotation;
 
 use Drupal\Component\Annotation\Plugin;