public FlowSplitWhenSpec(ITestOutputHelper helper) : base(helper)
{
var settings =
ActorMaterializerSettings.Create(Sys)
.WithInputBuffer(2, 2)
.WithSubscriptionTimeoutSettings(
new StreamSubscriptionTimeoutSettings(
StreamSubscriptionTimeoutTerminationMode.CancelTermination, TimeSpan.FromSeconds(1)));
Materializer = ActorMaterializer.Create(Sys, settings);
}