Generate Mojom Types in Dart (Take 2)

mojo/dart/packages/mojo/lib/src/proxy.dart

Index: mojo/dart/packages/mojo/lib/src/proxy.dart
diff --git a/mojo/dart/packages/mojo/lib/src/proxy.dart b/mojo/dart/packages/mojo/lib/src/proxy.dart
index 2484ed4c15d756c82d0714423f8b0cb4a1e599e5..60e2396e727e973275f639d5976d671b81d8ac24 100644
--- a/mojo/dart/packages/mojo/lib/src/proxy.dart
+++ b/mojo/dart/packages/mojo/lib/src/proxy.dart
@@ -35,6 +35,13 @@ abstract class Proxy extends core.MojoEventHandler {
   /// call to [queryVersion] or [requireVersion] is made.
   int get version => _version;
 
+  /// Returns a service description, which exposes the mojom type information
+  /// of the service being proxied. This type information can be forwarded to
+  /// other Mojo applications and can be used to implement a generic client.
+  /// Note: In some implementations, the ServiceDescription returned will not
+  /// provide type information. Methods called may return null or an error.

[zra, 2016/01/27 18:15:12]

It's unclear if you mean the `description` getter could return an error, or if a
method it describes could return an error.

I'd recommend cutting this comment down a bit. I think all that's needed is the
first sentence, and a warning that it might be null.

[alexfandrianto, 2016/01/28 03:45:12]

Done.

+  service_describer.ServiceDescription get description => null;
+
   void handleRead() {
     var result = endpoint.queryAndRead();
     if ((result.data == null) || (result.dataLength == 0)) {