tree caa72d647cdb276325596188ef855cacf44690eb
parent 963a9d2dc8c5fb05f7a84356a019a0fd4ab55d37
author Googler <jhorvitz@google.com> 1687273742 -0700
committer Copybara-Service <copybara-worker@google.com> 1687273829 -0700

Use a constant empty `SupportedEnvironments` instance.

Most instances are empty.

PiperOrigin-RevId: 541925977
Change-Id: I677e7ba76427fc477b743e04f6483f3f15072a20