# File lib/new_relic/agent/instrumentation/rack.rb, line 139
        def use_with_newrelic(middleware_class, *args, &blk)
          if ::NewRelic::Agent::Instrumentation::RackHelpers.middleware_instrumentation_enabled?
            wrapped_middleware_class = ::NewRelic::Agent::Instrumentation::MiddlewareProxy.for_class(middleware_class)
            use_without_newrelic(wrapped_middleware_class, *args, &blk)
          else
            use_without_newrelic(middleware_class, *args, &blk)
          end
        end