if (stateMap == null) {
            stateMap = new HashMap<>();
            session.setAttribute(STATES, stateMap);
        }
        final StateData stateData = new StateData(nonce, ComponentUtil.getSystemHelper().getCurrentTimeAsLong());
        if (logger.isDebugEnabled()) {
            logger.debug("store {} in session", stateData);
        }
        stateMap.put(state, stateData);
    }

        }
        return OptionalEntity.empty();
    }

    public static OptionalEntity<FileAuthentication> getFileAuthentication(final CreateForm form) {
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final String username = systemHelper.getUsername();
        final long currentTime = systemHelper.getCurrentTimeAsLong();
        return getEntity(form, username, currentTime).map(entity -> {

        }
        return OptionalEntity.empty();
    }

    public static OptionalEntity<RequestHeader> getRequestHeader(final CreateForm form) {
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final String username = systemHelper.getUsername();
        final long currentTime = systemHelper.getCurrentTimeAsLong();
        return getEntity(form, username, currentTime).map(entity -> {

        }
        return OptionalEntity.empty();
    }

    public static OptionalEntity<AccessToken> getAccessToken(final CreateForm form) {
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final String username = systemHelper.getUsername();
        final long currentTime = systemHelper.getCurrentTimeAsLong();
        return getEntity(form, username, currentTime).map(entity -> {

        protected Writer writer;

        protected SynonymItem item;

        protected SynonymUpdater(final SynonymItem newItem) {
            try {
                newFile = ComponentUtil.getSystemHelper().createTempFile(SYNONYM, ".txt");
                writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(newFile), Constants.UTF_8));
            } catch (final Exception e) {

        }
        return OptionalEntity.empty();
    }

    public static OptionalEntity<LabelType> getLabelType(final CreateForm form) {
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final String username = systemHelper.getUsername();
        final long currentTime = systemHelper.getCurrentTimeAsLong();
        return getEntity(form, username, currentTime).map(entity -> {

                            this::asListHtml);
                }
                final String filename = form.jarFile.getFileName();
                final File tempFile = ComponentUtil.getSystemHelper().createTempFile("tmp-adminplugin-", ".jar");
                try (final InputStream is = form.jarFile.getInputStream(); final OutputStream os = new FileOutputStream(tempFile)) {
                    CopyUtil.copy(is, os);

        protected StemmerOverrideItem item;

        protected StemmerOverrideUpdater(final StemmerOverrideItem newItem) {
            try {
                newFile = ComponentUtil.getSystemHelper().createTempFile(STEMMER_OVERRIDE, ".txt");
                writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(newFile), Constants.UTF_8));
            } catch (final Exception e) {

        if (StringUtil.isNotBlank(options.propertiesPath)) {
            systemProperties.reload(options.propertiesPath);
        } else {
            try {
                final File propFile = ComponentUtil.getSystemHelper().createTempFile("suggest_", ".properties");
                if (propFile.delete() && logger.isDebugEnabled()) {
                    logger.debug("Deleted a temp file: {}", propFile.getAbsolutePath());
                }

        }
        return OptionalEntity.empty();
    }

    public static OptionalEntity<PathMapping> getPathMapping(final CreateForm form) {
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final String username = systemHelper.getUsername();
        final long currentTime = systemHelper.getCurrentTimeAsLong();
        return getEntity(form, username, currentTime).map(entity -> {