Helper::createSharingLinkExpireDate

static function createSharingLinkExpireDate(?DateTime $dateTime, string $linkType): ?DateTime
{
	$result = null;

	if (!$dateTime)
	{
		return null;
	}

	if (array_key_exists($linkType, SharingLinkHelper::LIFETIME_AFTER_NEED))
	{
		$result = $dateTime->add(SharingLinkHelper::LIFETIME_AFTER_NEED[$linkType]);
	}

	return $result;
}