code: public void addInputStreamPart(String name, String inputStreamName, InputStream inputStream, String contentTransferEncoding, String contentType) {
          stream.put(name, new NamedInputStream(inputStreamName, inputStream, contentTransferEncoding, contentType));
      }
docs: Adds an inputstream to te request
  
  @param name
  @param inputStreamName
  @param inputStream
  @param contentTransferEncoding usually binary
  @param contentType