GCP REST API or Terraform equivalent of "gcloud services vpc-peerings enable-vpc-service-controls"

Consider this CLI:

gcloud services vpc-peerings enable-vpc-service-controls ...

Questions:

1. What is the GCP REST API method equivalent to that?
2. What is the Terraform equivalent to that?

For any gcloud command you can append --log-http to have the command enumerate the underlying REST APIs that are called.

Another approach is to browse the service using:

1. Google's excellent APIs Explorer though this requires more familiarity with the underlying service
2. Service Networking API;
3. enableVpcServiceControls

This approach also provides definitions of the request and response (and Operation) types