public static async Task <IEnumerable <ActorInformation> > GetActorsAsync(this FabricClient fabricClient, IActorProxyFactory actorProxyFactory, Uri applicationUri, Uri actorServiceUri, CancellationToken cancellationToken) =>
(await Task.WhenAll((await fabricClient.GetInt64RangePartitionsAsync(applicationUri, actorServiceUri)).Select(
partition => fabricClient.GetActorsAsync(actorProxyFactory, actorServiceUri, partition.LowKey, cancellationToken))))
.SelectMany(x => x).ToList();
