Using beforeFilter Event with custom eventListener class

MyController.php

<?php
namespace App\Controller;

use App\Controller\AppController;
use App\Controller\MyEventListener;

class MyController extends AppController {

	public function initialize() {
		// this sets up the eventManager, loads Components and the like.
		parent::initialize();
		$this->eventManager()->on(new MyEventListener($this->Auth));
	}
	
	public function index() {
	}
}

MyEventListener.php

<?php
namespace App\Controller;

use Cake\Event\EventListenerInterface;
use Cake\Controller\Component\AuthComponent;

class MyEventListener implements EventListenerInterface {
	private $auth = null;

	public function __construct(AuthComponent $auth) {
		$this->auth = $auth;
	}

	public function implementedEvents() {
		return [
		// THIS SHOULD RATHER READ:
		//	'Controller.beforeFilter' => 'beforeFilter',
			'Controller.initialize' => 'beforeFilter',
		];
	}

	public function beforeFilter(\Cake\Event\Event $event) {
		// you can use $this-auth now
		debug([$this->auth, $event]);
		throw new Exception();
	}
}

Thank you bro.
I got your idea.

Compare this implementation to
https://github.com/cakephp/cakephp/blob/master/src/Controller/Controller.php#L452-L460

You would think that the beforeFilter event is called "beforeFilter", NOT "initialize".
Especially as initialize is used in the same scope and even needed to setup the "beforeFilter" event at all!

This is very confusing!

I see.
The document not mention this one and i don't know Controller.beforeFilter event does not exists.
Thank you.