# File lib/ec2/right_mon_interface.rb, line 92
        def list_metrics(options={})

            next_token = options[:next_token] || nil

            params = { }
            params['NextToken'] = next_token unless next_token.nil?

            @logger.info("list Metrics ")

            link = generate_request("ListMetrics", params)
            resp = request_info(link, QMonListMetrics.new(:logger => @logger))

        rescue Exception
            on_exception
        end