diff --git a/core/modules/comment/lib/Drupal/comment/CommentStatistics.php b/core/modules/comment/lib/Drupal/comment/CommentStatistics.php
index 05b436d..fef0d28 100644
--- a/core/modules/comment/lib/Drupal/comment/CommentStatistics.php
+++ b/core/modules/comment/lib/Drupal/comment/CommentStatistics.php
@@ -6,7 +6,6 @@
 
 namespace Drupal\comment;
 
-
 use Drupal\Core\Database\Connection;
 use Drupal\Core\Entity\ContentEntityInterface;
 use Drupal\Core\Entity\EntityChangedInterface;
@@ -16,6 +15,9 @@
 use Drupal\Core\Session\AccountInterface;
 use Drupal\user\EntityOwnerInterface;
 
+/**
+ * Provides a class for storage and retrieval of comment statistics.
+ */
 class CommentStatistics implements CommentStatisticsInterface {
 
   /**
diff --git a/core/modules/comment/lib/Drupal/comment/CommentStatisticsInterface.php b/core/modules/comment/lib/Drupal/comment/CommentStatisticsInterface.php
index 773c592..e2b2d93 100644
--- a/core/modules/comment/lib/Drupal/comment/CommentStatisticsInterface.php
+++ b/core/modules/comment/lib/Drupal/comment/CommentStatisticsInterface.php
@@ -33,7 +33,7 @@ public function getRankingInfo();
    * @param string $entity_type
    *   The entity type of the passed entities.
    *
-   * @return object[]
+   * @return \StdClass[]
    *   Array of statistics records keyed by entity id.
    */
   public function read($entities, $entity_type);