2615e865e2
Avoids breaks that appear when enabling the `nnbd` experiment by default as seen in: https://dart-review.googlesource.com/c/sdk/+/166790 Change-Id: I052853c42b772af9180d109f231215c00a5a8202 Fixes: https://github.com/dart-lang/sdk/issues/43843 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/168742 Reviewed-by: Anna Gringauze <annagrin@google.com> Commit-Queue: Nicholas Shahan <nshahan@google.com>