Class ConferenceError

var conferenceError = ConferenceDataService.newConferenceError()
    .setConferenceErrorType(ConferenceErrorType.PERMANENT);

var state = ScriptApp.newStateToken()
    .withMethod('myLoginCallbackFunction');
    .withTimeout(3600)
    .createToken();

var authenticationUrl = 'https://script.google.com/a/google.com/d/'
    + ScriptApp.getScriptId()
    + '/usercallback?state='
    + state;

var conferenceError = ConferenceDataService.newConferenceError()
    .setConferenceErrorType(ConferenceDataService.ConferenceErrorType.AUTHENTICATION)
    .setAuthenticationUrl(authenticationUrl);