8d4a1ccaf6
This prepares the generator to be implemented by the analyzer. Change-Id: Idccd5af9aac79300186b3a07c636bb580bdd637c Reviewed-on: https://dart-review.googlesource.com/56491 Reviewed-by: Dmitry Stefantsov <dmitryas@google.com> Commit-Queue: Peter von der Ahé <ahe@google.com>