ENGCOM-2642: Fix #4803: Incorrect return value from Product Attribute Repository #15691

Author: Stanislav Idolov

app/code/Magento/Eav/Api/Data/AttributeInterface.php

@@ -1,17 +1,19 @@
 <?php
 /**
- *
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
 namespace Magento\Eav\Api\Data;
 
+use Magento\Framework\Api\CustomAttributesDataInterface;
+use Magento\Framework\Api\MetadataObjectInterface;
+
 /**
  * Interface AttributeInterface
  * @api
  * @since 100.0.2
  */
-interface AttributeInterface extends \Magento\Framework\Api\CustomAttributesDataInterface
+interface AttributeInterface extends CustomAttributesDataInterface, MetadataObjectInterface
 {
     const ATTRIBUTE_ID = 'attribute_id';