# File lib/fog/aws/requests/sns/list_subscriptions_by_topic.rb, line 28
        def list_subscriptions_by_topic(arn, options={})
          response = Excon::Response.new

          subscriptions = self.data[:subscriptions].values.select { |s| s["TopicArn"] == arn }

          response.body = {'Subscriptions' => subscriptions, 'RequestId' => Fog::AWS::Mock.request_id}
          response
        end