Went through todos

Models/Comment.php

@@ -54,10 +54,10 @@ class Comment implements \JsonSerializable
     /**
      * Comment list this comment belongs to
      *
-     * @var int|CommentList
+     * @var int
      * @since 1.0.0
      */
-    public $list = 0;
+    public int $list = 0;
 
     /**
      * Title

Models/CommentMapper.php

@@ -59,11 +59,7 @@ final class CommentMapper extends DataMapperFactory
         'createdBy' => [
             'mapper'   => AccountMapper::class,
             'external' => 'comments_comment_created_by',
-        ],
-        'list' => [
-            'mapper'   => CommentListMapper::class,
-            'external' => 'comments_comment_list',
-        ],
+        ]
     ];
 
     /**