Ember.js v2 Load multiple models in route without making separate requests

Just getting started with Ember.js, so after a workign myself through the various tutorials online for a couple of weeks(…), I really can't puzzle out the following question.

I want to display 4 models on 1 route. How can I do that, while avoiding making 4 server calls?

More inforamtion:

I want to display records of type "person", "quote", "product" and "case" on my index page.

In my index route, (routes/index.js) I can load them using:

import Ember from "ember";

export default Ember.Route.extend({
  model(){
    return Ember.RSVP.hash({
      persons : this.get('store').findAll('person'),
      quotes  : this.get('store').findAll('quote'),
      cases   : this.get('store').findAll('case'),
      products: this.get('store').findAll('product')
    });
  }
});

(And in my adapter, adapters/application.js, I have: )

import DS from "ember-data";

export default DS.JSONAPIAdapter.extend({
  host       : 'http://localhost:8080/dummy.php',
  pathForType: function (type) {
    return "?type=" + type;
  }
});

This works very nicely(, but ember.js makes get 4 requests:

However, I could easily provide a JSON file that provides records of all 4 types.

So, how can I tell ember.js:

"Here's a nice large JSON file, full of records. Now, use only records of the 'person'-type for the person model, and idem dito for 'case', 'quote' and 'product'

?