I have deployed my Node JS app onto Google Cloud App Engine, and I can successfully add my custom domain for my app.
Let say my custom domain is example.com.
Now I can browse my app via example.com & www.example.com, it works as expected. But I find that I can still browse my app through the default domain. https://[project-id].appspot.com
I want to disable the default domain, is it possible to do that?