Line numbers are approximate: https://github.com/GoogleCloudPlatform/java-docs-samples/blob/master/functions/helloworld/hello-pubsub/src/test/java/functions/ExampleIntegrationTest.java#L19-L113 https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/functions/helloworld/sample_pubsub_test_integration.py#L15-L68