FixtureAdapter.queryFixtures() implementation

I have

 App.Employee.FIXTURES = [{
  id: 1,
  firstName: 'Charlie'
  lastName: 'Hayes'
}, {
  id: 2,
  firstName: 'Ray'
  lastname: 'White'

I implemented the queryFixtures for the FixtureAdapter

I execute this statement in a controller to find the matching records

 var model ='employee', {lastName: 'Hayes'})
 transitionToRoute('employee', model)

In the EmployeeRoute’s serialize method, the model object is not what I expected it to be.

model contents(just the data tree from root):

  - content: Array[1]
    - 0: Object
      - record: Class
        - _data: Object
          firstName: "Charlie"
          lastName: "Hayes"

I was expecting it to match

var model ='employee', 1)

model contents:

  - _data: Object
    firstname: "Charlie"
    lastName: "Hayes"  

Because of this difference, the model.get(‘lastName’) in EmployeeRoute’s serializer implementation returns undefined and the employee template does not display any values. Although, the query is an asynchronous call, why does it not resolve to an object with the template matching the latter.

Is the implementation of queryFixtures() wrong? How do I get the model in controller with the {lastName: ‘Hayes’} query?

Did you ever figure this out? I’m having the same problem.