diff --git a/core/modules/aggregator/lib/Drupal/aggregator/Plugin/Derivative/AggregatorFeedBlock.php b/core/modules/aggregator/lib/Drupal/aggregator/Plugin/Derivative/AggregatorFeedBlock.php
index 286cd20..be1630f9 100644
--- a/core/modules/aggregator/lib/Drupal/aggregator/Plugin/Derivative/AggregatorFeedBlock.php
+++ b/core/modules/aggregator/lib/Drupal/aggregator/Plugin/Derivative/AggregatorFeedBlock.php
@@ -9,7 +9,7 @@
 
 use Drupal\Core\Plugin\Discovery\ContainerDerivativeInterface;
 use Drupal\Core\Database\Connection;
-use Symfony\Component\Translation\TranslatorInterface;
+use Drupal\Core\StringTranslation\TranslationInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
@@ -36,7 +36,7 @@ class AggregatorFeedBlock implements ContainerDerivativeInterface {
   /**
    * The translation manager
    *
-   * @var \Symfony\Component\Translation\TranslatorInterface
+   * @var \Drupal\Core\StringTranslation\TranslationInterface
    */
   protected $translationManager;
 
@@ -47,8 +47,10 @@ class AggregatorFeedBlock implements ContainerDerivativeInterface {
    *   The base plugin ID.
    * @param \Drupal\Core\Database\Connection $connection
    *   The database connection.
+   * @param \Drupal\Core\StringTranslation\TranslationInterface $translation_manager
+   *   The translation manager.
    */
-  public function __construct($base_plugin_id, Connection $connection, TranslatorInterface $translation_manager) {
+  public function __construct($base_plugin_id, Connection $connection, TranslationInterface $translation_manager) {
     $this->basePluginId = $base_plugin_id;
     $this->connection = $connection;
     $this->translationManager = $translation_manager;
@@ -66,7 +68,7 @@ public static function create(ContainerInterface $container, $base_plugin_id) {
   }
 
   /**
-   * Implements \Drupal\Component\Plugin\Derivative\DerivativeInterface::getDerivativeDefinition().
+   * {@inheritdoc}
    */
   public function getDerivativeDefinition($derivative_id, array $base_plugin_definition) {
     if (!empty($this->derivatives) && !empty($this->derivatives[$derivative_id])) {
@@ -80,7 +82,7 @@ public function getDerivativeDefinition($derivative_id, array $base_plugin_defin
   }
 
   /**
-   * Implements \Drupal\Component\Plugin\Derivative\DerivativeInterface::getDerivativeDefinitions().
+   * {@inheritdoc}
    */
   public function getDerivativeDefinitions(array $base_plugin_definition) {
     // Add a block plugin definition for each feed.