}

    /**
     * Log the login failure activity.
     * @param credential The credential.
     */
    public void loginFailure(final OptionalThing<LoginCredential> credential) {
        final Map<String, String> valueMap = new LinkedHashMap<>();
        valueMap.put("action", Action.LOGIN_FAILURE.name());
        credential.ifPresent(c -> {
            valueMap.put("class", c.getClass().getSimpleName());

        activityHelper.loginFailure(OptionalThing.empty());
        assertEquals(
                "{\"@timestamp\":\"2022-01-01T00:00:00.000Z\",\"log.level\":\"INFO\",\"ecs.version\":\"1.2.0\",\"service.name\":\"fess\",\"event.dataset\":\"app\",\"process.thread.name\":\"main\",\"log.logger\":\"org.codelibs.fess.helper.ActivityHelperTest$1\",\"labels.action\":\"LOGIN_FAILURE\"}",
                localLogMsg.get());
    }

            if (logger.isInfoEnabled()) {
                logger.info("Login failed for user: username={}, reason={}", username, lfe.getMessage());
            }
            activityHelper.loginFailure(OptionalThing.of(new LocalUserCredential(username, password)));
            throwValidationError(messages -> messages.addErrorsLoginError(GLOBAL), () -> asIndexPage(form));
        }
        return redirect(getClass());

            }
            if (logger.isDebugEnabled()) {
                logger.debug("Redirecting to login page after failure.", lfe);
            }
            activityHelper.loginFailure(OptionalThing.of(loginCredential));
            return redirect(LoginAction.class);
        }
    }

    /**
     * SSO metadata endpoint.
     *