Ember.js: How to get meta data of multiple requests to same url

I am populating my page with data of multiple models like so:

index route:

model: function() {
    return Ember.RSVP.hash({
        books: this.store.find('book', {order: 'new'}),
        featuredList: this.store.find('list', {type: 'featured'}),
        recommendedList: this.store.find('list', {type: 'recomended'}),
    });
}

As you can see, two of the requests are made to same data source: list

And I need to get the meta data of the last two requests. Currently, I can only get meta data only on the last request like below:

index controller:

export default Ember.Controller.extend({
    listMeta: function() {
        return Ember.copy(this.store.metadataFor('list'));
   }.property()
});

How can I get the meta data of both requests to list?