docs: public static String fetchNextSkiptoken(JSONObject jsonObject) throws Exception {
          String skipToken = "";
          // Parse the skip token out of the string.
          skipToken = jsonObject.optJSONObject("responseMsg").optString("odata.nextLink");
  
          if (!skipToken.equalsIgnoreCase("")) {
              // Remove the unnecessary prefix from the skip token.
              int index = skipToken.indexOf("$skiptoken=") + (new String("$skiptoken=")).length();
              skipToken = skipToken.substring(index);
          }
          return skipToken;
      }