public void testHeaderAndClaimsSetConstructor()
throws Exception {
PlainHeader header = new PlainHeader.Builder().customParam("exp", 1000l).build();
JWTClaimsSet claimsSet = new JWTClaimsSet();
claimsSet.setSubject("alice");
claimsSet.setIssuer("http://c2id.com");
claimsSet.setAudience("http://app.example.com");