// Validate all groups
        violations = validator.validate(bean);
        assertEquals(1, violations.size()); // Only default group is validated
    }

    // Test custom message
    @Test
    public void test_customMessage() {
        CustomMessageBean bean = new CustomMessageBean();
        bean.setCronWithCustomMessage("invalid");

            }

            // SECURITY WARNING: JWT signature validation is not implemented.
            // This is a critical security vulnerability. The ID token should be validated
            // to ensure it was issued by the expected OpenID Connect provider and has not been tampered with.
            // TODO: Implement JWT signature validation using the provider's public key

1.75rem/calc(0.75em + 0.375rem) calc(0.75em + 0.375rem) no-repeat;\n}\n\n.was-validated .custom-select:valid:focus, .custom-select.is-valid:focus {\n  border-color: #28a745;\n  box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.25);\n}\n\n.was-validated .form-check-input:valid ~ .form-check-label, .form-check-input.is-valid ~ .form-check-label {\n  color: #28a745;\n}\n\n.was-validated .form-check-input:valid ~ .valid-feedback,\n.was-validated .form-check-input:valid ~ .valid-tooltip, .form-check-input.is-valid ~ ...

calc(.75em + .375rem) no-repeat}.custom-select.is-valid:focus,.was-validated .custom-select:valid:focus{border-color:#28a745;box-shadow:0 0 0 0 rgba(40,167,69,.25)}.form-check-input.is-valid~.form-check-label,.was-validated .form-check-input:valid~.form-check-label{color:#28a745}.form-check-input.is-valid~.valid-feedback,.form-check-input.is-valid~.valid-tooltip,.was-validated .form-check-input:valid~.valid-feedback,.was-validated .form-check-input:valid~.valid-tooltip{display:block}.custom-contr...

    }

    /**
     * Validates the OAuth2 state parameter.
     * @param session The HTTP session containing stored state data.
     * @param state The state parameter to validate.
     * @return The validated state data.
     */
    protected StateData validateState(final HttpSession session, final String state) {
        if (StringUtils.isNotEmpty(state)) {