Calling controller function from Ember setupController inside Route

How can I call a function inside action handlebars from setupController located in the Route. (Same Q goes for calling function inside controller and not the route itself)

I want my page to analyse the URL parameters and fill some variables based on those parameters.

App.CresRoute = Ember.Route.extend({
  setupController: function(){
    this.send('testFunction', "Print me");
  },

  actions: {
    testFunction: function(string){
        console.log(string);
    },
  }
});

Returns error: Nothing handled the function 'testFunction'. Obviously my mehtods are more complext and with many parameters and this ise just to demonstrate the problem.

Thanks for all the help!