/// <summary>
/// Topic update received. This indicates an update to the state of a topic that is subscribed to.
/// </summary>
/// <param name="topicPath">the full topic path.</param><param name="content">the topic content. The context
/// may contain more information about the nature of the content </param><param name="context"> the update
/// context which may indicate whether the content represents the total state or a change to the state</param>
public void OnTopicUpdate(string topicPath, IContent content, IUpdateContext context)
{
Console.WriteLine("{0}: {1}", topicPath, content.AsString());
}
/// <summary>
/// Indicates that a message was received.
/// </summary>
public void OnMessage(ISessionId sessionId, string topicPath, IContent content, IReceiveContext context)
=> WriteLine($"Handler for {topicPath} has received message: {content.AsString()}.");
