Yes, the file is called verify-codegen.sh, and yes in the other
Knative projects it both verifies generated code and verifies vendored
dependencies are up-to-date. For client, it just verifies vendored
dependencies don't drift.
The test-infra scripts specifically look for a file with this name. If
we'd prefer to call this something else, we'll also need to update
test-infra to look for that something else.