CloudPubsubTopic
import type { CloudPubsubTopic } from "https://googleapis.deno.dev/v1/classroom:v1.ts";A reference to a Cloud Pub/Sub topic. To register for notifications, the
owner of the topic must grant
classroom-notifications@system.gserviceaccount.com the
projects.topics.publish permission.
interface CloudPubsubTopic {
topicName?: string;
}