Emberjs How to access an class without creating a model

Hy there.

Is there a way to access a model class without creating a record from store and looking at his constructor ?

I have :

const feedback = this.store
                     .createRecord('feedback')
                     .get('constructor');
const attrs    = Ember.get(feedback, 'attributes')
                      ._keys
                      .list;
// attr = ["attr_1", "attr_2", ...]

Is there a proper way to find the same result without creating a record ?

cheerz