docs: public static String convertStreamToString(InputStream in) throws Exception {
  
          BufferedReader reader = new BufferedReader(new InputStreamReader(in));
          StringBuilder stringbuilder = new StringBuilder();
          String line = null;
          while ((line = reader.readLine()) != null) {
            stringbuilder.append(line + "\n");
          }
          in.close();
          return stringbuilder.toString();
        }