if (StringUtil.isNotBlank(tokenReqParams)) {
                    final HttpEntity httpEntity = parseRequestParameters(tokenReqParams, null, encoding);
                    httpPost.setEntity(httpEntity);
                }
                httpRequest = httpPost;
            } else {
                final StringBuilder buf = new StringBuilder(100);
                buf.append(tokenUrl);

                .setMode(HttpMultipartMode.BROWSER_COMPATIBLE)
                .setCharset(Charset.forName("UTF-8"))
                .addBinaryBody("filedata", in)
                .build();
        httpPost.setEntity(postEntity);

        try (CloseableHttpResponse response = httpClient.execute(httpPost)) {
            if (response.getStatusLine().getStatusCode() != Constants.OK_STATUS_CODE) {

     * @param username the current username
     * @param currentTime the current timestamp
     * @return optional duplicate host entity
     */
    public static OptionalEntity<DuplicateHost> getEntity(final CreateForm form, final String username, final long currentTime) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new DuplicateHost()).map(entity -> {

     * @param form the create form
     * @param username the current username
     * @param currentTime the current time
     * @return optional key match entity
     */
    public static OptionalEntity<KeyMatch> getEntity(final CreateForm form, final String username, final long currentTime) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new KeyMatch()).map(entity -> {

     * @param username The username.
     * @param currentTime The current time.
     * @return An optional entity of a data config.
     */
    public static OptionalEntity<DataConfig> getEntity(final CreateForm form, final String username, final long currentTime) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new DataConfig()).map(entity -> {

    //                                                                        ============

    private static OptionalEntity<StopwordsItem> getEntity(final CreateForm form) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            final StopwordsItem entity = new StopwordsItem(0, StringUtil.EMPTY);
            return OptionalEntity.of(entity);

    //                                                                        Assist Logic
    //                                                                        ============

    private static OptionalEntity<AccessToken> getEntity(final CreateForm form, final String username, final long currentTime) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new AccessToken()).map(entity -> {

    //                                                                       Assist Logic
    //                                                                       ============
    private static OptionalEntity<User> getEntity(final CreateForm form) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new User()).map(entity -> {

     * @param username the username of the current user
     * @param currentTime the current timestamp
     * @return an optional WebAuthentication entity
     */
    public static OptionalEntity<WebAuthentication> getEntity(final CreateForm form, final String username, final long currentTime) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new WebAuthentication()).map(entity -> {

    //                                                                        Assist Logic
    //                                                                        ============
    private static OptionalEntity<PathMapping> getEntity(final CreateForm form, final String username, final long currentTime) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new PathMapping()).map(entity -> {