code: function(manager, context) {
      var modelClass, routeMatcher, namespace, param, id;
  
      if (Ember.empty(context)) { return ''; }
  
      if (modelClass = this.modelClassFor(get(manager, 'namespace'))) {
        param = paramForClass(modelClass);
        id = get(context, 'id');
        context = {};
        context[param] = id;
      }
  
      return context;
    }
docs: The default method that takes an object and converts it into
  a params hash.
  
  By default, if there is a single dynamic segment named
  `blog_post_id` and the object is a `BlogPost` with an
  `id` of `12`, the serialize method will produce:
  
  { blog_post_id: 12 }