These extensions were previously in `pkg/analyzer_utilities`, which is
not published on `pub`. That meant they could not be used from within
the `lib` directory of any package that *is* published on
`pub`. Specifically, they could not be used from within
`pkg/analyzer_testing/lib`.
In a follow-up CL, I will modify the testing logic so that after
printing `To accept the current state, expect:`, it prints diagnostic
codes in their proper camelCase format.
Change-Id: I6a6a696432d7162906b2c235ea88310dc0aa1fa9
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/480040
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Paul Berry