Tokens used by Auth0 [https://auth0.com/docs/tokens]
OAuth [https://en.wikipedia.org/wiki/OAuth]
[https://habr.com/company/mailru/blog/115163/]
Continue reading API, tokens, auth, oauth
https://stackoverflow.com/questions/46727276/mvvm-pattern-and-startactivity
Sending Events From an MVVM View Model with Kotlin [https://medium.com/@erik_90880/sending-events-from-an-mvvm-view-model-with-kotlin-19fdce61dcb9]