/application/core/MY_Controller.php

Hello, what if I need two (or more) different MY_Controller classes in a core folder? CodeIgniter allows creation only one "extended" version?

I tried

PHP Code:

class MY_AuthController extends CI_Controller
{
    public function __construct()
    {
        parent::__construct();
        /* ... */        
    }
} 


but that didn't work (conventional MY_Controller works fine).