    # File lib/stella/report.rb, line 346
            def metrics_pretty
              return unless metrics
              pretty = ['Metrics   (across %d requests)' % metrics.requests]
              [:socket_connect, :send_request, :first_byte, :last_byte, :response_time].each do |fname|
                val = metrics.send(fname)
                pretty << ('%20s: %8sms' % [fname.to_s.tr('_', ' '), val.mean.to_ms])
              end
              pretty << ''
              [:request_headers_size, :response_content_size].each do |fname|
                val = metrics.send(fname)
                pretty << ('%20s: %8s' % [fname.to_s.tr('_', ' '), val.mean.to_bytes])
              end
              pretty.join $/
            end