public function reverseTransform($value)
    {
        if (null === $value) {
            return;
        }

        if (!is_numeric($value)) {
            throw new TransformationFailedException('Expected a numeric.');
        }

        try {
            $dateTime = new \DateTime();
            $dateTime->setTimezone(new \DateTimeZone($this->outputTimezone));
            $dateTime->setTimestamp($value);

            if ($this->inputTimezone !== $this->outputTimezone) {
                $dateTime->setTimezone(new \DateTimeZone($this->inputTimezone));
            }
        } catch (\Exception $e) {
            throw new TransformationFailedException($e->getMessage(), $e->getCode(), $e);
        }

        return $dateTime;
    }