anchor.diff:  /// and consumer doesn't grow unreasonably large.  The maximum buffer
   /// size is set by maxBuf; the default value of 1 MB should be reasonable
   /// for most uses.
  +///
   class Uint8ListIsolateStream<A> extends IsolateStream<Uint8List, A> {
     /// Create a stream from a generator function that returns an
     /// [Iterator]
  
positive.code:   }
  }
  
  /// A convenience implementation of the common case of an
  /// `IsolateStream<Uint8List>`.
  /// This can be useful for generating a stream that is large -- many GB, or
  
negative.code: import 'dart:typed_data';
  import 'package:async/async.dart'; // Only for Cipher*Stream
  
  ///
  ///  A [Stream] whose content is generated by a function that runs in a separate
  ///  [Isolate].  A flow control protocol is established to throttle the
  ///  generating function, if needed, so that the [SendPort]/[ReceivePort] buffer
  ///  doesn't get overly large.
  ///
  ///  See also [Uint8ListIsolateStream].
  ///
  class IsolateStream<T, A> extends DelegatingStream<T> {
    final _IsolateStreamGenerator<T, A> _isolateManager;
  
  