public void FlowGraphs_when_turned_into_sinks_should_work_with_a_Source_when_having_KeyedSink_inside()
{
var probe = TestSubscriber.CreateManualProbe<int>(this);
var pubSink = Sink.AsPublisher<int>(false);
var sink = Sink.FromGraph(GraphDsl.Create(pubSink, (b, p) => new SinkShape<int>(p.Inlet)));
var mm = Source1.RunWith(sink, Materializer);
Source.FromPublisher(mm).To(Sink.FromSubscriber(probe)).Run(Materializer);
ValidateProbe(probe, 4, new[] { 0, 1, 2, 3 });
}