public static OptionalEntity<KuromojiItem> createKuromojiItem(final FessBaseAction action, final CreateForm form,
            final VaErrorHook hook) {
        return getEntity(form).map(entity -> {
            entity.setNewToken(form.token);
            entity.setNewSegmentation(form.segmentation);
            entity.setNewReading(form.reading);
            entity.setNewPos(form.pos);
            return entity;
        });
    }