ec854e415f
Based on the conversation in https://github.com/dart-lang/language/issues/4586 it appears that we might allow both `augment` and `external` to apply to the same method. While we are not currently supporting the `augmentations` language feature, this CL will guard against the possibility that `augmentations` might be enabled before the `primary-constructors` feature. Change-Id: I8a2133385c6afc919a814c38929d4c451631c49a Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/466841 Commit-Queue: Brian Wilkerson <brianwilkerson@google.com> Reviewed-by: Paul Berry <paulberry@google.com>