Custom::getStructure

public function getStructure(): array
{
	$structure = unserialize(
		COption::GetOptionString('intranet', 'left_menu_custom_preset_sort', '')
		, ['allowed_classes' => false]
	);
	return is_array($structure) ? [
		'shown' => isset($structure['show']) && is_array($structure['show']) ? $structure['show'] : [],
		'hidden' => isset($structure['hide']) && is_array($structure['hide']) ? $structure['hide'] : []
	] : [];
}