Using Luracast Restler PHP how to specify a default class method for the root path

I working with Luracast Restler API frame work and cannot figure out how to specify a default behavior for the root directory. For example:

webroot/user - will invoke the class User method get() by default

webroot/ - return a 404

Is there a catch all class/method for the base path?

### Creating default class and default action to map it as the root

on your `index.php` (gateway)

require_once '../../restler/restler.php';
require_once 'say.php';
$r = new Restler();
//blank string as the second param removes class_name from the URL
$r->addAPIClass('Say','');
$r->handle();

This makes Say as the default class, mapped to the root
Next on your API class (Say) define an `index` method, it can also be a `get` method

class Say {
function index($to='world') {
return "Hello $to!";
}
}

then calling

GET index.php

will return `Hello World!`