trackEvent method
Implementation
@override
Future<void> trackEvent(String event, {Map<String, String>? params}) async {
if (params == null) {
await methodChannel.invokeMethod<String>('trackEvent', {'event': event});
} else {
String paramsStr = json.encode(params);
await methodChannel.invokeMethod<String>(
'trackEvent', {'event': event, 'params': paramsStr});
}
return;
}