magento/graphql-ce#890: [Checkout] Replace usage of CartItemQuantity with CartItemInterface

Author: lenaorobei

dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/Guest/GetAvailableShippingMethodsTest.php

@@ -75,7 +75,10 @@ public function testGetAvailableShippingMethods()
         );
         self::assertCount(1, $response['cart']['shipping_addresses'][0]['cart_items']);
         self::assertCount(1, $response['cart']['shipping_addresses'][0]['cart_items_v2']);
-        self::assertEquals('simple_product', $response['cart']['shipping_addresses'][0]['cart_items_v2'][0]['product']['sku']);
+        self::assertEquals(
+            'simple_product',
+            $response['cart']['shipping_addresses'][0]['cart_items_v2'][0]['product']['sku']
+        );
     }
 
     /**