initRum function
Initializes and installs the process-wide MoleSignal RUM client.
A previous client is stopped before it is replaced.
Implementation
Future<MoleSignalRumClient> initRum(RumConfiguration configuration) async {
final MoleSignalRumClient? previous = _activeClient;
if (previous != null) await previous.stop();
final MoleSignalRumClient client = await MoleSignalRumClient.create(
configuration,
);
_activeClient = client;
return client;
}