comparison vendor/symfony/dependency-injection/ChildDefinition.php @ 18:af1871eacc83

Update to Drupal core 8.7.1

      *
      * @throws OutOfBoundsException When the argument does not exist
      */
     public function getArgument($index)
     {
-        if (array_key_exists('index_'.$index, $this->arguments)) {
+        if (\array_key_exists('index_'.$index, $this->arguments)) {
             return $this->arguments['index_'.$index];
         }
 
         return parent::getArgument($index);
     }