An optional list of additional attributes to attach to each Cloud PubSub message published for this notification subscription.
HTTP 1.1 Entity tag for this subscription notification.
If present, only send notifications about listed event types. If empty, sent notifications for all event types.
The kind of item this is. For notifications, this is always storage#notification.
If present, only apply this notification configuration to object names that begin with this prefix.
The desired content of the Payload.
The canonical URL of this notification.
The Cloud PubSub topic to which this subscription publishes. Formatted as: '//pubsub.googleapis.com/projects/{project-identifier}/topics/{my-topic}'