private function getVatRateIdentifier(array $variation)
    {
        $vatRateIdentity = $this->identityService->findOneBy([
            'adapterIdentifier' => $variation['vatId'],
            'adapterName' => PlentymarketsAdapter::NAME,
            'objectType' => VatRate::TYPE,
        ]);

        if (null === $vatRateIdentity) {
            throw new NotFoundException('missing mapping for vat rate');
        }

        return $vatRateIdentity->getObjectIdentifier();
    }
private function getVatRateIdentifier(array $variation)
    {
        $vatRateIdentity = $this->identityService->findOneBy([
            'adapterIdentifier' => $variation['vatId'],
            'adapterName' => PlentymarketsAdapter::NAME,
            'objectType' => VatRate::TYPE,
        ]);

        if (null === $vatRateIdentity) {
            throw new NotFoundException('missing mapping for vat rate');
        }

        return $vatRateIdentity->getObjectIdentifier();
    }
@param array $variation

@return string