I've found a bunch of topics created by PubSub integration tests - they dont seem to be getting cleaned up, perhaps?
614 name: projects/apache-beam-testing/topics/integ-test-PubsubJsonIT-testSelectsPayloadContent- 614 name: projects/apache-beam-testing/topics/integ-test-PubsubJsonIT-testSQLLimit- 222 name: projects/apache-beam-testing/topics/integ-test-PubsubReadIT-testReadPublicData-