The getRedirectUri() code sample in the README is invalid

[koconnor3]

The getRedirectUri() code sample is invalid. getService() is not defined, and neither is OAuth2.getService()

/**
 * Logs the redirect URI to register.
 */
function logRedirectUri() {
  var service = getService();
  Logger.log(service.getRedirectUri());
}

[FFredericAL]

I had the same problem, I have done this instead to get the Uri :

function getUrl(){
  Logger.log(OAuth2.getRedirectUri());
}

In the code, I found getService_()but I had the same issue.