code:   public void test_noVerification() throws Exception {
      // Sign a JWT and then attempt to verify it using None.
      JWT jwt = new JWT().setSubject("art");
      String encodedJWT = JWT.getEncoder().encode(jwt, HMACSigner.newSHA256Signer("secret"));
  
      expectException(MissingVerifierException.class, ()
          -> JWT.getDecoder().decode(encodedJWT));
    }
  
    @Test
  