public void IntervalTest()
{
Observable.Timer(TimeSpan.FromMilliseconds(1)).Monitor("Start", 0).Subscribe();
IObservable <long> xs = Observable.Interval(TimeSpan.FromSeconds(0.5))
.Take(30);
xs = xs.Monitor("Source", 1);
IConnectableObservable <long> cs = xs.Publish();
cs = cs.Monitor("Connectable", 2);
cs.Subscribe();
Thread.Sleep(2000);
IDisposable connection = cs.Connect();
Thread.Sleep(2000);
connection.Dispose();
Thread.Sleep(100);
GC.KeepAlive(cs);
}