code: function (params) {
  
  			if (dir.config.userConfig && 
  				dir.config.userConfig.openRoute) {
  				// Invoke user-defined open route callback.
  				var async = new Async(routeOpenDone);
  				var outputParams = dir.config.userConfig.openRoute(req, res, params, async) || params;
  
  				if (!async.started()) {
  					// No async operation was started.
  					// Invoke callback directly to complete route opening.
  					routeOpenDone(outputParams);
  				}
  			}
  			else {
  				// No callback, just complete route opening.
  				routeOpenDone(params);
  			}
  		}
docs: Actually open this route (probably after parent route has been opened).