Pimcore\Model\Object\ClassDefinition\Data\QuantityValue::getForCsvExport PHP Method

    public function getForCsvExport($object, $params = [])
    {
        $key = $this->getName();
        $getter = "get" . ucfirst($key);
        if ($object->{$getter}() instanceof \Pimcore\Model\Object\Data\QuantityValue) {
            return $object->{$getter}()->getValue() . "_" . $object->{$getter}()->getUnitId();
        } else {
            return null;
        }
    }