// multipart
for (Map.Entry<String, String> fileUrlMap : fileUrlMaps.entrySet()) {
log.info("fetch binary file: " + fileUrlMap.getValue());
HTTPRequest donwloadFilerequest = new HTTPRequest(new java.net.URL(fileUrlMap.getValue()), HTTPMethod.GET, FetchOptions.Builder.withDeadline(TIMEOUT_SECONDS));
HTTPResponse donwloadFileResponse = ufs.fetch(donwloadFilerequest);
byte[] binaryContent = donwloadFileResponse.getContent();
String contentType = null;
for (HTTPHeader header : donwloadFileResponse.getHeaders()) {