FluidTYPO3\Vhs\ViewHelpers\Menu\DirectoryViewHelper::initializeArguments PHP Method

    public function initializeArguments()
    {
        parent::initializeArguments();
        $this->registerArgument('pages', 'mixed', 'Parent page UIDs of subpages to include in the menu. Can be CSV, array or an object ' . 'implementing Traversable.', true);
    }