Extractor doesn't consider inherited functions to implement routes

If a route is configured that is implemented by a controller's parent class, an error is thrown saying 'Missing controller method'.

In my case, the method in question is the method authenticate from OCP\AppFramework\AuthPublicShareController which can't be overwritten by my controller because it is final.

As a workaround, I'll try to a proxy function that forwards its parameters to parent::authenticate, but ideally that should not be necessary.

My relevant routes:

<?php
declare(strict_types=1);

return [
	'routes' => [
		// ....
		['name' => 'SecretShare#authenticate', 'root' => '/secret',
			'url' => '/show/{token}/authenticate/{redirect}', 'verb' => 'POST'],
	],
	'ocs' => [
                // ....
	]
];

Excerpt from my controller class:

<?php
declare(strict_types=1);

namespace OCA\Secrets\Controller;

use OCP\AppFramework\AuthPublicShareController;

class SecretShareController extends AuthPublicShareController {
	// ...
}

Start with the route configuration for SecretShare#authenticate and the SecretShareController extending OCP\AppFramework\AuthPublicShareController. Trace the extractor's controller-method lookup to determine why inherited methods are rejected, then verify that the route is accepted without the missing-method error while preserving handling of final parent methods.