5366aa4469
Inspired by some recent code reviews from Lasse, I decided to make some improvements to flow analysis documentation to bring it more in line with the Dart style guide. Change-Id: Ibbda802055d7e17429806b2a4e608005bf761a69 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/433380 Reviewed-by: Lasse Nielsen <lrn@google.com> Commit-Queue: Paul Berry <paulberry@google.com>