MAGETWO-70886: Zend feed refactoring #9347

Author: Stanislav Idolov

app/code/Magento/Backend/Block/Template.php

@@ -3,6 +3,9 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+
+declare(strict_types=1);
+
 namespace Magento\Backend\Block;
 
 /**

app/code/Magento/Catalog/Controller/Adminhtml/Product/Initialization/Helper/AttributeFilter.php

@@ -3,6 +3,9 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+
+declare(strict_types=1);
+
 namespace Magento\Catalog\Controller\Adminhtml\Product\Initialization\Helper;
 
 use \Magento\Catalog\Model\Product;
@@ -43,7 +46,7 @@ public function prepareProductAttributes(Product $product, array $productData, a
      * @param $value
      * @return bool
      */
-    private function isAttributeShouldNotBeUpdated(Product $product, $useDefaults, $attribute, $value)
+    private function isAttributeShouldNotBeUpdated(Product $product, $useDefaults, $attribute, $value) : bool
     {
         $considerUseDefaultsAttribute = !isset($useDefaults[$attribute]) || $useDefaults[$attribute] === "1";
 

app/code/Magento/Checkout/Controller/Index/Index.php

@@ -4,6 +4,9 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+
+declare(strict_types=1);
+
 namespace Magento\Checkout\Controller\Index;
 
 class Index extends \Magento\Checkout\Controller\Onepage

app/code/Magento/Rss/Model/Rss.php

@@ -3,6 +3,9 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+
+declare(strict_types=1);
+
 namespace Magento\Rss\Model;
 
 use Magento\Framework\App\ObjectManager;