ff3908d6df
This follows the pattern of other meta-annotations, when it comes to the AST: * Element gains a new `hasSealed` getter. Many overrides. * ElementAnnotation gains a new `isSealed` getter. Bug: https://github.com/dart-lang/sdk/issues/34232 Change-Id: If8ae8e16b500125cb3b92b3cf83d46de6ca6ee23 Reviewed-on: https://dart-review.googlesource.com/71227 Commit-Queue: Samuel Rawlins <srawlins@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>