45bfa70348
Its absence causes a dartdoc test failure. Bug: https://github.com/dart-lang/sdk/issues/47220 Bug: https://buganizer.corp.google.com/issues/200468974 Change-Id: I0fe8af902cd9a11abb0102ce4744c57f1738ab5f Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/213880 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Reviewed-by: Janice Collins <jcollins@google.com> Commit-Queue: Konstantin Shcheglov <scheglov@google.com>