Andrej Hudec

@ollosh even with my MR https://github.com/googleapis/gax-php/pull/582 you will still need credentials. I managed to get it working using these fake credentials for emulator: ``` {"project_id":"emulator-project","client_id":"emulator","client_secret":"emulator","refresh_token":"emulator","type":"authorized_user"} ```

@ollosh yes. Code from https://github.com/googleapis/gax-php/pull/582 allows Pub/Sub client to work with emulator without requiring significant modifications to the client to get the http urls mentioned in #7588.