In a normal controller, it can use function intialize like this:
class GamesController extends ControllerBase
{
     public function initialize()
     {
         $this->view->disableLevel(View::LEVEL_MAIN_LAYOUT);
        ......
     }
}But how to use initialize() function in Base Controller like this:
class ControllerBase extends Controller
{
    public function initialize()
    {   
        echo "hello";
    }
}