static void PublishSomething(string topic, string msg)
{
Console.WriteLine("Publishing on " + topic + ": " + msg + "\n");
_client.Publish(topic, msg, QoS.AtLeastOnce, false);
Console.WriteLine("Publishing to alias test2: " + msg + "\n");
_client.PublishToAlias("test2", msg, QoS.AtLeastOnce, false);
}