# File lib/fog/aws/models/rds/event_subscription.rb, line 23
        def save
          requires :id, :sns_topic_arn

          data = service.create_event_subscription(
            'EventCategories'  => event_categories,
            'SourceType'       => source_type,
            'Enabled'          => enabled || true,
            'SubscriptionName' => id,
            'SnsTopicArn'      => sns_topic_arn
          ).body["CreateEventSubscriptionResult"]["EventSubscription"]
          merge_attributes(data)
          self
        end