https://docs.cloud.google.com/nodejs/docs/reference/pubsub/latest/pubsub/protos.google.pubsub.v1.expirationpolicy
Class protos.google.pubsub.v1.ExpirationPolicy (4.8.0) | Node.js client libraries | Google Cloud...
https://docs.cloud.google.com/python/docs/reference/pubsub/latest/google.cloud.pubsub_v1.types.ExpirationPolicy
Class ExpirationPolicy (2.38.0) | Python client libraries | Google Cloud Documentation
python clientgoogle cloudclass