OneTimeRun.gs

function generateGoogleToken() {
    // This will prompt a dialogue to allow cGOA access to see drive
    DriveApp.getFileById(‘YOUR_FILE_ID’)
  
  var propertyStore = PropertiesService.getScriptProperties();
  // service account for play console
  cGoa.GoaApp.setPackage (propertyStore , 
    cGoa.GoaApp.createServiceAccount (DriveApp, {
      packageName: 'PlayConsole',
      fileId:‘YOUR_FILE_ID’,
      scopes : cGoa.GoaApp.scopesGoogleExpand (['androidpublisher']), // play store scope
      service:'google_service'
    }));
}