How do I create a promise in Ember.js for an Ember-data model

I have an Ember-Data model. I would like to do some processing in the .then promise once it has loaded and then return the same model as a promise. This is what I have right now. How do I wrap up the return object as a promise so that other promises can be chained?

App.Member.find(1).then(function(member){

  //do some processing here
  return member; // Does this need to be wrapped as a promise?

}