text: /**
   * 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 AdAccount = bizSdk.AdAccount;
  const AdCreative = bizSdk.AdCreative;
  
  const access_token = '<ACCESS_TOKEN>';
  const app_secret = '<APP_SECRET>';
  const app_id = '<APP_ID>';
  const id = '<AD_ACCOUNT_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));
    }
  };
  
  let fields, params;
  fields = [
  ];
  params = {
    'name' : 'Image crop creative',
    'object_story_spec' : {'page_id':'<pageID>','link_data':{'image_crops':{'100x100':[[0,0],[100,100]]},'image_hash':'<imageHash>','link':'<url>','message':'Ad message'}},
  };
  const adcreatives = (new AdAccount(id)).createAdCreative(
    fields,
    params
  );
  logApiCallResult('adcreatives api call complete.', adcreatives);