Cake Rest Api Test

CakephpRestApiTest.php

Added in route.php

  $routes->connect('/', ['controller' => 'Users', 'action' => 'index', 'home']);

  $routes->connect('/users/*', ['controller' => 'Users', 'action' => 'index']);

  Router::scope('/', function ($routes) {
        $routes->extensions(['xml']);
        $routes->resources('Users');
  });
    
    
    
And create a file in /Template/Users/xml/index.ctp
  
  $xml = Xml::fromArray(['response' => $users]);
  echo $xml->asXML();
  
  
UsersController.php

class UsersController extends AppController
{

    /**
     * Index method
     *
     * @return void
     */
    public function index()
    {
        $this->set('users', $this->paginate($this->Users));
        $this->set('_serialize', ['users']);
    }

    /**
     * View method
     *
     * @param string|null $id User id.
     * @return void
     * @throws \Cake\Network\Exception\NotFoundException When record not found.
     */
    public function view($id = null)
    {
        $user = $this->Users->get($id, [
            'contain' => []
        ]);
        $this->set('user', $user);
        $this->set('_serialize', ['user']);
    }

    /**
     * Add method
     *
     * @return void Redirects on successful add, renders view otherwise.
     */
    public function add()
    {
        $user = $this->Users->newEntity();
        if ($this->request->is('post')) {
            $user = $this->Users->patchEntity($user, $this->request->data);
            if ($this->Users->save($user)) {
                $this->Flash->success(__('The user has been saved.'));
                return $this->redirect(['action' => 'index']);
            } else {
                $this->Flash->error(__('The user could not be saved. Please, try again.'));
            }
        }
        $this->set(compact('user'));
        $this->set('_serialize', ['user']);
    }

    /**
     * Edit method
     *
     * @param string|null $id User id.
     * @return void Redirects on successful edit, renders view otherwise.
     * @throws \Cake\Network\Exception\NotFoundException When record not found.
     */
    public function edit($id = null)
    {
        $user = $this->Users->get($id, [
            'contain' => []
        ]);
        if ($this->request->is(['patch', 'post', 'put'])) {
            $user = $this->Users->patchEntity($user, $this->request->data);
            if ($this->Users->save($user)) {
                $this->Flash->success(__('The user has been saved.'));
                return $this->redirect(['action' => 'index']);
            } else {
                $this->Flash->error(__('The user could not be saved. Please, try again.'));
            }
        }
        $this->set(compact('user'));
        $this->set('_serialize', ['user']);
    }

    /**
     * Delete method
     *
     * @param string|null $id User id.
     * @return void Redirects to index.
     * @throws \Cake\Network\Exception\NotFoundException When record not found.
     */
    public function delete($id = null)
    {
        $this->request->allowMethod(['post', 'delete']);
        $user = $this->Users->get($id);
        if ($this->Users->delete($user)) {
            $this->Flash->success(__('The user has been deleted.'));
        } else {
            $this->Flash->error(__('The user could not be deleted. Please, try again.'));
        }
        return $this->redirect(['action' => 'index']);
    }
}


If I hit webservice from a rest client 
http://localhost:8888/MyProject/users/index.json
I am not getting xml.