/// <summary>
 /// API Exposed method so that javscript can multicast.
 /// </summary>
 /// <param name="eventName">Event name to multicast</param>
 /// <param name="eventData">Optional string encoded event data to emit with.</param>
 public void MulticastEvent(string eventName, string eventDataJson)
 {
     host.MulticastEvent(eventName, eventDataJson);
 }