return asIndexPage(null).useForm(LoginForm.class);
    }

    private HtmlResponse asIndexPage(final LoginForm form) {
        if (form != null) {
            form.clearSecurityInfo();
        }
        return asHtml(virtualHost(path_Login_IndexJsp)).renderWith(data -> {
            RenderDataUtil.register(data, "notification", fessConfig.getNotificationLogin());
            saveToken();
        });

public class LoginForm {

    @NotBlank
    public String username;

    @NotBlank
    public String password;

    public String confirmPassword;

    public void clearSecurityInfo() {
        password = null;
        confirmPassword = null;
    }

public class ProfileForm {

    @NotBlank
    public String oldPassword;

    @NotBlank
    public String newPassword;

    @NotBlank
    public String confirmNewPassword;

    public void clearSecurityInfo() {
        oldPassword = null;
        newPassword = null;
        confirmNewPassword = null;
    }

public class PasswordForm {

    public String username;

    @NotBlank
    public String password;

    @NotBlank
    public String confirmPassword;

    public void clearSecurityInfo() {
        password = null;
        confirmPassword = null;
    }

        return asIndexHtml();
    }

    @Execute
    public HtmlResponse changePassword(final ProfileForm form) {
        final VaErrorHook toIndexPage = () -> {
            form.clearSecurityInfo();
            return asIndexHtml();
        };
        validatePasswordForm(form, toIndexPage);
        final String username = getUserBean().map(FessUserBean::getUserId).get();
        try {