force hasmany with same ids

I want ember to list all foo's on {{#each foo}} even though the id's are the same.

This is my model.

App.Item = DS.Model.extend({
  title: DS.attr("string"),
  foo: DS.hasMany("foo", {async: true})
});

App.Foo = DS.Model.extend({
  bar: DS.attr("string")
});

Let's say that foo is foo: [1] and the json response for that is:

{
  "foos": [{
    "id": 1,
    "bar": "But is it _lightweight_ omakase?"
  },
  {
    "id": 1,
    "bar": "I for one welcome our new omakase overlords"
  },
  {
    "id": 1,
    "bar": "Put me on the fast track to a delicious dinner"
  }]
}

Ember only lists the last object instead of everyone. I know that ember wants different ids, but is there a way to force ember to list all objects with same ids?

I'm using ember data and this is a read-only app.