title: Calling function from another controller
body: <p>I have two controllers</p>
  
  <p>DefaultController</p>
  
  <pre><code>class DefaultController extends Controller
  {
      public function indexAction()
      {
  </code></pre>
  
  <p>ApiController</p>
  
  <pre><code>class ApiController extends Controller
  {
      public function getCategoryAction()
      {
  </code></pre>
  
  <p>Now I want to call getCategoryAction from my DefaultController.</p>
  
  <p>Is it impossible or how can I make it?</p>