User::isInRole nefunguje s IRole

Ahoj,
existuje nejaky duvod proc metoda User::isInRole() nepracuje s rozhranim IRole?

Ted jsem na to po delsi dobe opet narazil. Drive to slo vyresit vlastni implementaci metody isInRole(), ale ta je ted z nejakeho duvodu od v.3 final

Priklad:

class AdminRole implements \Nette\Security\IRole
{
	public function getRoleId(): string
	{
		return 'admin';
	}
}

class Authenticator implements Nette\Security\IAuthenticator
{
	public function authenticate(array $credentials): Nette\Security\IIdentity
	{
		.....

		$roles[] = new AdminRole();

		return new Nette\Security\Identity($id, $roles, $data);
	}
}

$this->user->isInRole('admin'); //false

Jednoducha implementace by mohla vypadat nejak takhle

class User extends \Nette\Security\User
{
	public function isInRole($role): bool
	{
		$roles = [];

		foreach ($this->getRoles() as $role)
		{
			if ($role instanceof \Nette\Security\IRole) {
				$roles[] = $role->getRoleId();
			} else {
				$roles[] = $role;
			}
		}

		return in_array($role, $roles, true);
	}
}

Diky za info