# File lib/aws/elb/listener.rb, line 90
      def server_certificate
        desc = _description
        if desc.listener.respond_to?(:ssl_certificate_id)
          AWS.memoize do
            arn = desc.listener.ssl_certificate_id
            iam = IAM.new(:config => config)
            iam.server_certificates.find{|cert| cert.arn == arn }
          end
        else
          nil
        end
      end