diff --git a/core/modules/comment/src/CommentManager.php b/core/modules/comment/src/CommentManager.php
index 0863dc3..1bed270 100644
--- a/core/modules/comment/src/CommentManager.php
+++ b/core/modules/comment/src/CommentManager.php
@@ -314,7 +314,7 @@ public function forbiddenMessage(EntityInterface $entity, $field_name) {
     return '';
   }
 
-  /*
+  /**
    * {@inheritdoc}
    */
   public function getCountNewComments(EntityInterface $entity, $field_name = NULL, $timestamp = 0) {
@@ -355,4 +355,5 @@ public function getCountNewComments(EntityInterface $entity, $field_name = NULL,
     }
     return FALSE;
   }
+
 }
diff --git a/core/modules/comment/src/CommentManagerInterface.php b/core/modules/comment/src/CommentManagerInterface.php
index 53ca6c8..ef9e861 100644
--- a/core/modules/comment/src/CommentManagerInterface.php
+++ b/core/modules/comment/src/CommentManagerInterface.php
@@ -91,9 +91,10 @@ public function forbiddenMessage(EntityInterface $entity, $field_name);
    * @param \Drupal\Core\Entity\EntityInterface $entity
    *   The entity to which the comments are attached to.
    * @param string $field_name
-   *   The field_name to count comments for. Defaults to any field.
+   *   (optional) The field_name to count comments for. Defaults to any field.
    * @param int $timestamp
-   *   Time to count from. Defaults to time of last user access the entity.
+   *   (optional) Time to count from. Defaults to time of last user access the
+   *   entity.
    *
    * @return int|false
    *   The number of new comments or FALSE if the user is not authenticated.