diff --git a/core/lib/Drupal/Core/Config/Schema/ArrayElement.php b/core/lib/Drupal/Core/Config/Schema/ArrayElement.php
index 19423dc..9443476 100644
--- a/core/lib/Drupal/Core/Config/Schema/ArrayElement.php
+++ b/core/lib/Drupal/Core/Config/Schema/ArrayElement.php
@@ -9,8 +9,8 @@
 
 use Drupal\Component\Utility\String;
 use Drupal\Core\Config\TypedConfigManagerInterface;
-use Drupal\Core\TypedData\TraversableTypedDataInterface;
 use Drupal\Core\TypedData\TypedData;
+use Drupal\Core\TypedData\TypedDataInterface;
 
 /**
  * Defines a generic configuration element that contains multiple properties.
@@ -164,7 +164,7 @@ public function getIterator() {
    * @param mixed $value
    *   (optional) The data value. If set, it has to match one of the supported
    *   data type format as documented for the data type classes.
-   * @param string $name
+   * @param string $key
    *   The key of the contained element.
    *
    * @return \Drupal\Core\TypedData\TypedDataInterface