Get the email address of this project's GCS service account.
get(projectId)
Get the email address of this project's GCS service account. Args: projectId: string, Project ID (required) Returns: An object of the form: { # A subscription to receive Google PubSub notifications. "kind": "storage#serviceAccount", # The kind of item this is. For notifications, this is always storage#notification. "email_address": "A String", # The ID of the notification. }