issuedBy example

$key = InMemory::plainText($appSecret);

        $configuration = Configuration::forSymmetricSigner(
            new Sha256(),
            $key
        );

        $expiration = new \DateTimeImmutable('+10 minutes');
        $shopId = $this->shopIdProvider->getShopId();
        $builder = $configuration
            ->builder()
            ->issuedBy($shopId)
            ->issuedAt(new \DateTimeImmutable())
            ->canOnlyBeUsedAfter(new \DateTimeImmutable())
            ->expiresAt($expiration);

        if (\in_array('sales_channel:read', $privileges, true)) {
            $builder->withClaim('salesChannelId', $context->getSalesChannel()->getId());
        }

        if (\in_array('customer:read', $privileges, true)) {
            $builder->withClaim('customerId', $context->getCustomer()->getId());
        }