Python Google PubSubset从subscribe()设置确认截止日期

我正在使用订阅数据 subscribe() (见下文)。

有没有办法设置 ackDeadline 订阅() ? 我只能看到它对我有用 streaming_pull() .

subscriber = pubsub_v1.SubscriberClient()
subscription_path = subscriber.subscription_path(project_id, subscription_id )
streaming_pull_future = subscriber.subscribe(subscription_path, callback=callback)