tree b84ec01ed08347d819ef79b51d7951866b3c54ad
parent 479857b3c02419cd9c3ad693f9e20378bc4dd85f
author lberki <lberki@google.com> 1582009650 -0800
committer Copybara-Service <copybara-worker@google.com> 1582009694 -0800

Raise an error when a select() expression yields None in a mandatory attribute.

Preferable to crashing.

RELNOTES: None.
PiperOrigin-RevId: 295669663