With the Firebase Crashlytics SDK, the documentation explains how you can force a crash
However, in the line:
Crashlytics.getInstance().crash();
Crashlytics is unrecognized and cannot be imported.
I tried switching to FirebaseCrashlytics.getInstance() but there is no crash() method.
Note: Crashlytics is indeed set up properly - I am able to cause my own crash by looking up a view that does not exist and it is reported correctly.