The v1beta2 version of the Cloud Pub/Sub API was part of our Beta launch, and will be deprecated as of July 1, 2015. The v1beta2 API will continue to work until January 11, 2016, and will shut down after that date. Please migrate to the v1 API.

v1: https://cloud.google.com/pubsub/reference/rest/index#pubsub.googleapis.com_1