Retrieving ClientId using Google Apps Script

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This is a sample script for retrieving clientId using Google Apps Script.

var accessToken = ScriptApp.getOAuthToken();
var url = "https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=" + accessToken;
var params = {
  method: "post",
  headers: {"Authorization": "Bearer " + accessToken}
};
var res = UrlFetchApp.fetch(url, params).getContentText();
var clientId = JSON.parse(res).azp;
Logger.log(clientId)

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