final GetObjectArgs args = GetObjectArgs.builder().bucket(fessConfig.getStorageBucket()).object(objectName).build();
        try (InputStream in = createClient(fessConfig).getObject(args)) {
            out.write(in);
        } catch (final Exception e) {
            throw new StorageException("Failed to download " + objectName, e);
        }
    }

    private WebApiUtil() {
    }

    public static void setObject(final String name, final Object value) {
        LaRequestUtil.getOptionalRequest().ifPresent(req -> req.setAttribute(name, value));
    }

    @SuppressWarnings("unchecked")
    public static <T> T getObject(final String name) {
        return LaRequestUtil.getOptionalRequest().map(req -> (T) req.getAttribute(name)).orElse(null);