Are there any plans to be able to use Cloud Pub/Sub's Exactly-once delivery in Trigger functions?

[t-shotaro]

Last December, Cloud Pub/Sub announced a feature to enable Exactly-once delivery.
https://cloud.google.com/blog/products/data-analytics/cloud-pub-sub-exactly-once-delivery-feature-is...

It seems that Pub/Sub is used internally by Cloud Storage Trigger and others.
https://cloud.google.com/functions/docs/tutorials/storage?hl=ja

Can users enable Exactly-once delivery? If not, are there any plans to enable it?

[aaronscottb]

Upon creation of a subscription in Pub/Sub, you can explicitly enable the Exactly-once delivery by following this method. Once done, you may use the created subscription as Cloud Storage as trigger to a function based on this documentation. 

[Derek_]

Can you please enable the ability to specify exactly once delivery as part of the event trigger setup so that it can be maintained in Terraform code and not require a follow-on action with gcloud or from the console?