Only deprecated references remain.
Usages of the deprecated methods will be migrated in a follow-up change.
#minor-release
PiperOrigin-RevId: 405927141
Our package-info.java files are annotated with @NonNullApi which results
in everything being non-null by default, so this annotation is never
needed.
#minor-release
PiperOrigin-RevId: 405864737
