FactoryGirl\Provider\Doctrine\DateIntervalHelper::get PHP Method

    public function get($format = self::TIMESTAMP)
    {
        if ($format == self::DATE_TIME) {
            return $this->time;
        } elseif ($format == self::TIMESTAMP) {
            return $this->time->getTimestamp();
        } elseif ($format == self::DATE_STRING) {
            return $this->time->format('d-m-y');
        } else {
            throw new \InvalidArgumentException("Unknown time format '" . $format . "'");
        }
    }