TimeHelper::getTimestampByUserSecondsFromTimestamp

public function getTimestampByUserSecondsFromTimestamp($seconds, $initialTimestamp = null, $initialOffset = null)
{
	if (is_null($seconds))
	{
		return null;
	}
	$userDateTime = $this->createDateTimeFromFormat('U', $initialTimestamp, $initialOffset);
	return $this->getTimestampOfTime($userDateTime, $seconds);
}