# File lib/aws/sns/topic.rb, line 135
      def confirm_subscription token, options = {}

        options[:authenticate_on_unsubscribe] = 'true' if
          options[:authenticate_on_unsubscribe]

        confirm_opts = options.merge(:token => token, :topic_arn => arn)
        resp = client.confirm_subscription(confirm_opts)
        Subscription.new(
          resp[:subscription_arn],
          :topic_arn => arn,
          :config => config)

      end