Subscribe to notifications for job schedule executions.
alter job schedule <schedule reference> add notification subscription <spec> alter job schedule <schedule reference> add email notification subscription [<spec>] [with trigger "<trigger>"] [with to <to email>]
JSON. A specification for the notification subscription. Optional if using add email notification syntax.
String. The reference to the schedule to subscribe to, optionally qualified by project.
String. When to send notifications. See the notification subscription spec for options and default value.
Email. The email to send notifications to. Default: user email address.