MultilingualPress code

gistfile1.txt

   // /content/plugins/multilingualpress3/src/multilingualpress/Cache/NavMenuItemsSerializer.php
   $menuItem = $postArray['menu_item'] ?? [];
    foreach (self::MENU_ITEM_ALLOWED_PROPERTIES as list($property, $type, $default)) {
        if (!isset($post->{$property})) {
            $post->{$property} = $this->extractValue($menuItem, $property, $type, $default);
        }
    }

    $this->unserialized[] = $post;
}