overrideUserId method
Overrides user id to given newUserId
Implementation
@override
Future<String?> overrideUserId({
required String newUserId,
required Map<String, dynamic> traits,
}) async {
final result = await methodChannel.invokeMethod<String?>(
overrideUserIdMethodName,
{'newUserId': newUserId, 'traits': traits},
);
return result;
}