Method references `Async::await` are not taken away

[azurvii]

The instrumentation tool takes away all Async.await occurrences, but does not take away Async::await. I think this is a bug?

E.g.

final List<CompletableFuture<Void>> futures = new ArrayList<>();
futures.add(CompletableFuture.completedFuture(null));
futures.stream().map(Async::await).collect(Collectors.toList());

The Async::await stays after instrumentation.

[JoeHegarty]

Yes, this is likely a bug. A PR would be welcome, unfortunately I am unlikely to get time to fix in the near future.