diff --git a/dev/tests/functional/tests/app/Magento/Checkout/Test/Fixture/Cart/Items.php b/dev/tests/functional/tests/app/Magento/Checkout/Test/Fixture/Cart/Items.php
index 4a30bee7265715fa1e9d615d82987fdd7412f7e4..1d81b595b9b51cb1005dbcf0737070a3edeb9a05 100644
--- a/dev/tests/functional/tests/app/Magento/Checkout/Test/Fixture/Cart/Items.php
+++ b/dev/tests/functional/tests/app/Magento/Checkout/Test/Fixture/Cart/Items.php
@@ -53,6 +53,8 @@ class Items extends DataSource
      *
      * @param null|string $key
      * @return array
+     *
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function getData($key = null)
     {