What is a FCM token?

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Tags

1. #client
2. #target
3. #initial
4. #messaging
5. #access
6. #registration
7. #cloud
8. #google
9. #startup
10. #instance
11. #commonly
12. #single
13. #token
14. #device
15. #devices
16. #create
17. #registrationtoken
18. #known
19. #generates
20. #groups