execute method
Implementation
@override
Future<RawEvent> execute(RawEvent event) async {
// We need to get the Context in a concurrency safe mode to permit changes to make it in before we retrieve it
final context = await analytics!.state.context.state;
context!.instanceId = instanceId;
context.library = ContextLibrary("events-sdk-flutter", Analytics.version());
event.context = context;
return event;
}