missing ObjectAdapter

src-php/app/internship/bo/Article.php

@@ -1,7 +1,9 @@
 <?php
 namespace internship\bo;
 
-class Article implements \JsonSerializable {
+use n2n\reflection\ObjectAdapter;
+
+class Article extends ObjectAdapter implements \JsonSerializable {
 	private int $id;
 	private string $categoryName;
 	private string $text;