tree 0cbadc587c94c5bb6ffc3f163efee656ace964c8
parent c163c91fce80cea21e8c0d74f6eba4effa68c13f
author janakr <janakr@google.com> 1549663203 -0800
committer Copybara-Service <copybara-piper@google.com> 1549663335 -0800

Fix theoretical bug pointed out by jhorvitz@, that GroupedList assumes its elements are either raw or Lists, but #appendGroup(Collection) might add a Set or other Collection, which we wouldn't handle correctly.

The original motivation was to stress that the deps in a group were unordered with respect to each other, but that's not a good enough reason.

PiperOrigin-RevId: 233121648