After installing the needed dependencies, let's start adding our logic to support the needed behavior. Within our application, I would like to test if adding Google Sign-in will affect my user base or not, so what I'm doing is integrating Firebase Remote Config within my application so I simply have a dynamic render for my testing purposes:

Head directly to your LoginViewController and import Firebase, if you haven't done that already:
import Firebase
Now, within the viewDidLoaded() function, we will need to implement the Firebase Remote Config in order to ...