使用与路由键无关的额外参数调用路由方法

Question

如何使用与路由密钥无关的额外参数调用路由方法？我想分别将param1和param2传递给bar

var MyRouter = Backbone.Marionette.AppRouter.extend({
  appRoutes: {
    "some/route1/:id": "foo"
    "some/route2/:id": "bar with param1"  // "bar with x" is pseudo-code
    "some/route3/:id": "bar with param2"
  },
  foo : function(id){},
  bar : function(id, param){}
});