@Test(groups = TCKConstants.TEST_GROUP_UTILS, description = "Illustrate validation of a JWT",
    expectedExceptions = {InvalidJwtException.class})

public void testSignedByRSKeyVerifiedByECKey() throws Exception {
    String token = TokenUtils.signClaims("/Token1.json", SignatureAlgorithm.RS256);
    validateToken(token, SignatureAlgorithm.ES256, null);
}