trigger method
Implementation
Future<void> trigger(PusherEvent event) async {
if (event.channelName.startsWith("private-") ||
event.channelName.startsWith("presence-")) {
await methodChannel.invokeMethod('trigger', {
"channelName": event.channelName,
"eventName": event.eventName,
"data": event.data
});
} else {
throw ('Trigger event is only for private/presence channels');
}
}