code: function (params) {
  			// 
  			// Close the route once it has been handled.
  			//
  			var closeRoute = function () {
  				that._closeRoute(dir, req, res, params);
  			};
  
  			var async = new Async(closeRoute);
  			routeConfig.handler(req, res, params, async);
  
  			if (!async.started()) {
  				// No async operation was started.
  				// Close the route immediately.
  				closeRoute();
  			}			
  		}
docs: When the route has been opened, invoke the route handler.