private static HttpResponse postMultipartToUrl(OAuthParameters parameters, GenericUrl url, DataHandler multipart) throws IOException {
    HttpRequestFactory requestFactory = new NetHttpTransport().createRequestFactory(parameters);

    MultipartContent postBody = new MultipartContent()
        .setMediaType(new HttpMediaType("multipart/form-data"));
    postBody.setBoundary("boundary");


      HttpContent partContent = new ByteArrayContent("file", IOUtils.toByteArray(multipart.getInputStream()));
      HttpHeaders partHeaders = new HttpHeaders()
          .set("Content-Disposition",  "form-data; name="" + "file" + """);
      postBody.addPart(new MultipartContent.Part(partHeaders, partContent));
    HttpRequest request = requestFactory.buildPostRequest(url, postBody);
    request.setHeaders(new HttpHeaders());
    return request.execute();
}