Ember model unnamed JSON variable

I'm trying to consume the following JSON response in Ember.

[
  {
    "url": "https://example.com",
    "files": {
      "config.json": {
        "name": "config.json"
      },
      "style.css": {
        "name": "style.css"
      }
    },
    "user": null
  },
  {
    "url": "https://newexample.com",
    "files": {
      "settings.json": {
        "name": "settings.json"
      },
      "index.html": {
        "name": "index.html"
      }
    },
    "user": null
  }
]

Here's my first model "snippet":

export default Model.extend({
  url: attr('string'),
  files: hasMany('file')
});

And then my "file" model with which I created a hasMany Relationship to:

export default Model.extend({
  name: attr()
});

index.js route:

export default Ember.Route.extend({
  model() {
    return this.store.findAll('snippet');
  }
});

I realise that this won't work since I'm not defining the first variable in "files". Though I can't figure out how one would do this since this variable is dependent on the filename.

Any help would be appreciated. Thanks.