Function in Controller

[eluser]reidz[/eluser]
i want to ask how to handle request to function which do not show anyting to controller

Code:

class Example extends Controller
{
    function Example()
    {
        parent::Controller();
    }
    
    function index()
    {
        $this->load->view('some_view');
    }
    
    function do_nothing()
    {
        
    }
    
}

with this Controller, when i type this localhost/index.php/example/do_nothing on my address bar, the result is just blank page, because that function do_nothing do not called any view

so all im asking is how we handle this kind situation ? cause i dont want to display any blak page