how do you create hasMany records on a parent model?

Ember CreateRecord hasMany

App.Company = Ember.Model.extend
  name: DS.attr()
  addresses: DS.hasMany 'address'
  
App.Address = Ember.Model.extend
  city: DS.attr()
  company: DS.belongsTo 'company'
  
App.CompanyNewController = Ember.ObjectController.extend
  model: ->
    @get('store').createRecord('company', 
        name: "test company", 
        # How do I create default hasMany relationship objects??
        addresses:
            city: "Timbuktu"
          ,
            city: "Hoboken"