Folder::getParents

static function getParents(VolumeFragment $fragment): array
{
	$folder = $fragment->getFolder();
	if (!$folder instanceof DiskFolder)
	{
		throw new ArgumentTypeException('Fragment must be subclass of '.DiskFolder::className());
	}

	$parents = DiskCrumbStorage::getInstance()->getByObject($folder);

	return array_slice($parents, 1, count($parents) - 1, true);
}