Crm::getTitle

static function getTitle(VolumeFragment $fragment): ?string
{
	if ($fragment->getIndicatorType() == VolumeFolder::className() || $fragment->getIndicatorType() == VolumeFolderTree::className())
	{
		$folder = $fragment->getFolder();
		if (!$folder instanceof DiskFolder)
		{
			throw new ArgumentTypeException('Fragment must be subclass of '.DiskFolder::className());
		}

		return $folder->getOriginalName();
	}

	return parent::getTitle($fragment);
}