private static FileContent makeFileContentWithContent(InputStream content, String filename)
     throws IOException {
   String contentType = MimeTypeUtils.getMimeTypeByFilename(filename);
   return FileContent.create(content, contentType, content.available()).withFilename(filename);
 }
 private static FileContent makeFileContentWithFileItem(FileItem fi) throws IOException {
   return FileContent.createWithFileItem(fi).withFilename(fi.getName());
 }