I have a very simple IObservable<int> that acts as a pulse generator every 500ms:

var pulses = Observable.GenerateWithTime(0, i => true, i => i + 1, i => i,
                                         i => TimeSpan.FromMilliseconds(500))

And I have a CancellationTokenSource (that is used to cancel other work that is going on simultaneously).

How can I use the cancellation token source to cancel my observable sequence?

c# system.reactive cancellation
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