title: How to inject a repo into FirebaseMessagingService class
body: <p>I want to send client FCM token to my server when the token is ready, so I need my user repository in MyFirebaseMessagingService.</p>
  
  <p>The problem is FirebaseMessagingService needs default empty constructor.
  So How can inject my userRepo in the MyFirebaseMessagingService class?
  I'm using Koin as dependency injection</p>