comparison vendor/symfony/var-dumper/Cloner/Data.php @ 5:12f9dff5fda9 tip

Update to Drupal core 8.7.1

 
         $data = null;
         $children = $this->data[$item->position];
 
         foreach ($keys as $key) {
-            if (isset($children[$key]) || array_key_exists($key, $children)) {
+            if (isset($children[$key]) || \array_key_exists($key, $children)) {
                 $data = clone $this;
                 $data->key = $key;
                 $data->position = $item->position;
                 break;
             }