How to use the facebook-nodejs-business-sdk.ProductSet function in facebook-nodejs-business-sdk

/**
 * Copyright (c) 2017-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the license found in the
 * LICENSE file in the root directory of this source tree.
 * @flow
 */

 'use strict';
const bizSdk = require('facebook-nodejs-business-sdk');
const ProductCatalog = bizSdk.ProductCatalog;
const ProductSet = bizSdk.ProductSet;

const access_token = '';
const app_secret = '';
const app_id = '';
const id = '';
const api = bizSdk.FacebookAdsApi.init(access_token);
const showDebugingInfo = true; // Setting this to true shows more debugging info.
if (showDebugingInfo) {
  api.setDebug(true);
}

const logApiCallResult = (apiCallName, data) => {
  console.log(apiCallName);
  if (showDebugingInfo) {
    console.log('Data:' + JSON.stringify(data));
  }

/**
 * Copyright (c) 2017-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the license found in the
 * LICENSE file in the root directory of this source tree.
 * @flow
 */

 'use strict';
const bizSdk = require('facebook-nodejs-business-sdk');
const ProductCatalog = bizSdk.ProductCatalog;
const ProductSet = bizSdk.ProductSet;

const access_token = '';
const app_secret = '';
const app_id = '';
const id = '';
const api = bizSdk.FacebookAdsApi.init(access_token);
const showDebugingInfo = true; // Setting this to true shows more debugging info.
if (showDebugingInfo) {
  api.setDebug(true);
}

const logApiCallResult = (apiCallName, data) => {
  console.log(apiCallName);
  if (showDebugingInfo) {
    console.log('Data:' + JSON.stringify(data));
  }