Channels: "A channel represents the means by which a notification message is sent to an application watching a bucket." https://cloud.google.com/storage/docs/json_api/v1/channels

Objects -> watchAll: "Watch for changes on all objects in a bucket" https://cloud.google.com/storage/docs/json_api/v1/objects/watchAll

Hopefully I dropped this in the right milestone.