# System.Threading.Tasks.Dataflow

``` diff
 namespace System.Threading.Tasks.Dataflow {
     public static class DataflowBlock {
+        public static IAsyncEnumerable<TOutput> ReceiveAllAsync<TOutput>(this IReceivableSourceBlock<TOutput> source, CancellationToken cancellationToken = default(CancellationToken));
     }
 }
```

