public function start_el( &$output, $item, $depth = 0, $args = [], $item_id = 0 ) {
		parent::start_el( $output, $item, $depth, $args, $item_id );

		$output = preg_replace(
			'/menu-item-has-children([^>\"]*?)">/ms',
			'menu-item-has-children$1" aria-haspopup="true">',
			$output
		);
	}