Values.NotificationConfigurationSourceDescribes a notification.
type nonrec t = {autoScalingGroupName : XmlStringMaxLen255.t option;The name of the Auto Scaling group.
*)topicARN : XmlStringMaxLen255.t option;The Amazon Resource Name (ARN) of the Amazon SNS topic.
*)notificationType : XmlStringMaxLen255.t option;One of the following event notification types: autoscaling:EC2_INSTANCE_LAUNCH autoscaling:EC2_INSTANCE_LAUNCH_ERROR autoscaling:EC2_INSTANCE_TERMINATE autoscaling:EC2_INSTANCE_TERMINATE_ERROR autoscaling:TEST_NOTIFICATION
*)}