Firebase Analytics different method names?

[juliocbcotta]

flutter/flutter#37600

[iapicca]

contents from flutter/flutter#37600

So,
it looks like Android has setSessionTimeoutDuration
https://firebase.google.com/docs/reference/android/com/google/firebase/analytics/FirebaseAnalytics.html#setSessionTimeoutDuration(long)

and iOS has setsessiontimeoutinterval
https://firebase.google.com/docs/reference/ios/firebaseanalytics/api/reference/Classes/FIRAnalytics#+setsessiontimeoutinterval:

They seems to me to be the same action, but with different names in each platform?
Firebase Analytics plugin current implementation only tracks the setSessionTimeoutDuration.

If so, how to proceed ?

1. Create an FirebaseAnalyticsIos namespace and add the method setsessiontimeoutinterval?
2. Create the iOS version of setSessionTimeoutDuration and call setsessiontimeoutinterval ? Leaving it documented in the dart side?

cc: @collinjackson

[Salakar]

Closing this due to the tag spam from other issues. If this is still an issue then it'll most likely be covered under #2582