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module.exports = function(app){  var routes = get_routes();     app.get('/', routes.index);    app.get('/about', routes.about);}function get_routes() {          var routes = {}                routes.index = function(req, res) {    res.render('index', { title: 'Express' })  }   routes.about = function(req, res) {    res.render('about', { title: 'About Express' })  }   return routes;               }