executeAuthenticator example

        foreach ($authenticators as $authenticator) {
            // recheck if the authenticator still supports the listener. supports() is called             // eagerly (before token storage is initialized), whereas authenticate() is called             // lazily (after initialization).             if (false === $authenticator->supports($request)) {
                $this->logger?->debug('Skipping the "{authenticator}" authenticator as it did not support the request.', ['authenticator' => ($authenticator instanceof TraceableAuthenticator ? $authenticator->getAuthenticator() : $authenticator)::class]);

                continue;
            }

            $response = $this->executeAuthenticator($authenticator, $request);
            if (null !== $response) {
                $this->logger?->debug('The "{authenticator}" authenticator set the response. Any later authenticator will not be called', ['authenticator' => ($authenticator instanceof TraceableAuthenticator ? $authenticator->getAuthenticator() : $authenticator)::class]);

                return $response;
            }
        }

        return null;
    }

    private function executeAuthenticator(AuthenticatorInterface $authenticator, Request $request): ?Response
    {