Update comment style generic syntax

lib/stream_channel.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:async';
 
 import 'package:async/async.dart';
 
 import 'src/guarantee_channel.dart';
 import 'src/close_guarantee_channel.dart';
@@ skipping 90 matching lines @@
           StreamSink<T> sink) =>
       new CloseGuaranteeChannel(stream, sink);
 
   /// Connects [this] to [other], so that any values emitted by either are sent
   /// directly to the other.
   void pipe(StreamChannel<T> other);
 
   /// Transforms [this] using [transformer].
   ///
   /// This is identical to calling `transformer.bind(channel)`.
-  StreamChannel/*<S>*/ transform/*<S>*/(
-      StreamChannelTransformer<dynamic/*=S*/, T> transformer);
+  StreamChannel<S> transform<S>(
+      StreamChannelTransformer<S, T> transformer);
 
   /// Transforms only the [stream] component of [this] using [transformer].
   StreamChannel<T> transformStream(StreamTransformer<T, T> transformer);
 
   /// Transforms only the [sink] component of [this] using [transformer].
   StreamChannel<T> transformSink(StreamSinkTransformer<T, T> transformer);
 
   /// Returns a copy of [this] with [stream] replaced by [change]'s return
   /// value.
   StreamChannel<T> changeStream(Stream<T> change(Stream<T> stream));
 
   /// Returns a copy of [this] with [sink] replaced by [change]'s return
   /// value.
   StreamChannel<T> changeSink(StreamSink<T> change(StreamSink<T> sink));
 
   /// Returns a copy of [this] with the generic type coerced to [S].
   ///
   /// If any events emitted by [stream] aren't of type [S], they're converted
   /// into [CastError] events. Similarly, if any events are added to [sync] that
   /// aren't of type [S], a [CastError] is thrown.
-  StreamChannel/*<S>*/ cast/*<S>*/();
+  StreamChannel<S> cast<S>();
 }
 
 /// An implementation of [StreamChannel] that simply takes a stream and a sink
 /// as parameters.
 ///
 /// This is distinct from [StreamChannel] so that it can use
 /// [StreamChannelMixin].
 class _StreamChannel<T> extends StreamChannelMixin<T> {
   final Stream<T> stream;
   final StreamSink<T> sink;
 
   _StreamChannel(this.stream, this.sink);
 }
 
 /// A mixin that implements the instance methods of [StreamChannel] in terms of
 /// [stream] and [sink].
 abstract class StreamChannelMixin<T> implements StreamChannel<T> {
   void pipe(StreamChannel<T> other) {
     stream.pipe(other.sink);
     other.stream.pipe(sink);
   }
 
-  StreamChannel/*<S>*/ transform/*<S>*/(
-          StreamChannelTransformer<dynamic/*=S*/, T> transformer) =>
+  StreamChannel<S> transform<S>(
+          StreamChannelTransformer<S, T> transformer) =>
       transformer.bind(this);
 
   StreamChannel<T> transformStream(StreamTransformer<T, T> transformer) =>
       changeStream(transformer.bind);
 
   StreamChannel<T> transformSink(StreamSinkTransformer<T, T> transformer) =>
       changeSink(transformer.bind);
 
   StreamChannel<T> changeStream(Stream<T> change(Stream<T> stream)) =>
       new StreamChannel.withCloseGuarantee(change(stream), sink);
 
   StreamChannel<T> changeSink(StreamSink<T> change(StreamSink<T> sink)) =>
       new StreamChannel.withCloseGuarantee(stream, change(sink));
 
-  StreamChannel/*<S>*/ cast/*<S>*/() => new StreamChannel(
+  StreamChannel<S> cast<S>() => new StreamChannel(
       DelegatingStream.typed(stream), DelegatingStreamSink.typed(sink));
 }