docs: public static void upload(HttpURLConnection conn, List<Entry<String, String>> fileList, List<Param> paramList) throws IOException {
  		long time = System.currentTimeMillis();
  		String boundary = "Droid4jFormBoundary" + time;
  		boundary = "WebKitFormBoundary7Ihe6KrrkF27C7DX";
  
  		// conn.setRequestProperty("Charset", "UTF-8");
  		conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);
  
  		OutputStream output = conn.getOutputStream();
  
  		DataOutputStream ds = new DataOutputStream(output);
  		ds.writeBytes(BR);
  
  		for (Param param : paramList) {
  			if (param.getValue() != null) {
  				uploadParam(ds, boundary, param);
  			}
  		}
  
  		for (Entry<String, String> file : fileList) {
  			uploadFile(ds, boundary, file);
  		}
  
  		ds.writeBytes(BR + "--" + boundary + "--" + BR);
  
  		ds.flush();
  		ds.close();
  	}