tree d69488c77673da13984a45af4850b73ffd08d1a3
parent ca28e2c8ce130154906a46d38357939ac5ea2572
author Dan Rubel <danrubel@google.com> 1555535991 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1555535991 +0000

Update AstBuilder to handle "required" modifier

Change-Id: I68a3f0abd405119ccc52dc9263860129fff7453a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/99486
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Dan Rubel <danrubel@google.com>