HeaderCheckerManager example

            $jwsVerifier = new JWSVerifier(new AlgorithmManager([$this->signatureAlgorithm]));
            $serializerManager = new JWSSerializerManager([new CompactSerializer()]);
            $jws = $serializerManager->unserialize($accessToken);
            $claims = json_decode($jws->getPayload(), true);

            // Verify the signature             if (!$jwsVerifier->verifyWithKey($jws, $this->jwk, 0)) {
                throw new InvalidSignatureException();
            }

            // Verify the headers             $headerCheckerManager = new Checker\HeaderCheckerManager([
                new Checker\AlgorithmChecker([$this->signatureAlgorithm->name()]),
            ], [
                new JWSTokenSupport(),
            ]);
            // if this check fails, an InvalidHeaderException is thrown             $headerCheckerManager->check($jws, 0);

            // Verify the claims             $checkers = [
                new Checker\IssuedAtChecker(0, false, $this->clock),
                new Checker\NotBeforeChecker(0, false, $this->clock),