identifiedBy example

        if ($tokenStruct->getExpires() > 0) {
            $expires = $expires->modify(
                sprintf('+%d seconds', $tokenStruct->getExpires())
            );
        } else {
            $expires = $expires->modify(
                sprintf('-%d seconds', abs($tokenStruct->getExpires()))
            );
        }

        $jwtToken = $this->configuration->builder()
            ->identifiedBy(Uuid::randomHex())
            ->issuedAt(new \DateTimeImmutable('@' . time()))
            ->canOnlyBeUsedAfter(new \DateTimeImmutable('@' . time()))
            ->expiresAt($expires)
            ->relatedTo($tokenStruct->getTransactionId() ?? '')
            ->withClaim('pmi', $tokenStruct->getPaymentMethodId())
            ->withClaim('ful', $tokenStruct->getFinishUrl())
            ->withClaim('eul', $tokenStruct->getErrorUrl())
            ->getToken($this->configuration->signer(), $this->configuration->signingKey());

        $this->write($jwtToken->toString(), $expires);