private function getManufacturerIdentifier(array $product)
    {
        $manufacturerIdentity = $this->identityService->findOneOrCreate(
            (string) $product['manufacturerId'],
            PlentymarketsAdapter::NAME,
            Manufacturer::TYPE
        );

        if (null === $manufacturerIdentity) {
            throw new NotFoundException('missing mapping for manufacturer');
        }

        return $manufacturerIdentity->getObjectIdentifier();
    }
private function getManufacturerIdentifier(array $product)
    {
        $manufacturerIdentity = $this->identityService->findOneOrCreate(
            (string) $product['manufacturerId'],
            PlentymarketsAdapter::NAME,
            Manufacturer::TYPE
        );

        if (null === $manufacturerIdentity) {
            throw new NotFoundException('missing mapping for manufacturer');
        }

        return $manufacturerIdentity->getObjectIdentifier();
    }
@param array $product

@return string