Symfony2Admingenerator Select2 ajax mode

ActionsController.php

<?php
namespace Ksn135\CompanyBundle\Controller\Employee;

use Admingenerated\Ksn135CompanyBundle\BaseEmployeeController\ActionsController as BaseActionsController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\JsonResponse;

/**
 * ActionsController
 */
class ActionsController extends BaseActionsController
{
    public function ajaxAction(Request $request, $id = null)
    {
        try {
            $manager = $this->getDoctrine()->getManager();
            $results = $manager->getRepository('Ksn135CompanyBundle:Employee')
                ->getResultsForAjax($id, $request->request->get('q'));
            $serialized = $this->container->get('serializer')->serialize($results, 'json');

            return new JsonResponse([
                'success' => true,
                'results' => json_decode($serialized),
            ]);
        } catch (\Exception $exception) {
            return new JsonResponse([
                'success' => false,
                'code'    => $exception->getCode(),
                'message' => $exception->getMessage(),
            ]);
        }
    }
}

Employee-generator.yml

        employee:
            filterable:  true
            label:       Employee
            filterType:    s2a_select2_entity            
            formType:    s2a_select2_entity            
            addFormOptions:
                hidden:       true
                configs:
                    placeholder: Please, choose an employee
                    allowClear:  true
                    minimumInputLength: 3
                    ajax:
                        type: 'POST'
                        url: 'function() { return Routing.generate("ajax_get_employees"); }'
                        dataType: 'json'
                        quietMillis: 250
                        data: 'function (term, page) { return { q: term }; }'
                        results: 'function (data, page) { return { results: data.results }; }'
                        cache: true
                    initSelection: 'function(element, callback) { var id = $(element).val(); if (id !== "") { $.ajax(Routing.generate("ajax_get_employee", {id: id}), { type: "POST", dataType: "json" }).done(function(data) { callback(data.results[0]); });}}'
        

Employee.php

<?php

use JMS\Serializer\Annotation as JMS;

/**
 * @JMS\ExclusionPolicy("all")
 */
class Employee extends BaseUser
{
    /**
     * @JMS\Expose()
     */
    protected $id;


    /**
     * @JMS\Expose()
     * @JMS\SerializedName("text")
     */
    private $fullName;        
}

Model.User.yml

# put it into app/serializer/FOSUB/Model.User.yml
FOS\UserBundle\Model\User:
    exclusion_policy: ALL

routing.yml

ajax_get_employees:
    pattern: /ajax/get/employees
    defaults: 
        _controller: Ksn135CompanyBundle:Employee/Actions:ajax 
    methods:  [POST]
    options:
        expose: true

ajax_get_employee:
    pattern: /ajax/get/employee/{id}
    defaults: 
        id: ~
        _controller: Ksn135CompanyBundle:Employee/Actions:ajax 
        _format: json
    methods:  [POST]
    options:
        expose: true

Hello,

Can you show the function : getResultsForAjax() please?

Thank you