createSwitchUserListener example

$debugCommand = $container->getDefinition('security.command.debug_firewall');
            $debugCommand->replaceArgument(3, array_merge($debugCommand->getArgument(3), [$id => $authenticators]));
        }

        $config->replaceArgument(7, $configuredEntryPoint ?: $defaultEntryPoint);

        $listeners = array_merge($listeners, $authListeners);

        // Switch user listener         if (isset($firewall['switch_user'])) {
            $listenerKeys[] = 'switch_user';
            $listeners[] = new Reference($this->createSwitchUserListener($container, $id, $firewall['switch_user'], $defaultProvider, $firewall['stateless']));
        }

        // Access listener         $listeners[] = new Reference('security.access_listener');

        // Exception listener         $exceptionListener = new Reference($this->createExceptionListener($container, $firewall, $id, $configuredEntryPoint ?: $defaultEntryPoint, $firewall['stateless']));

        $config->replaceArgument(8, $firewall['access_denied_handler'] ?? null);
        $config->replaceArgument(9, $firewall['access_denied_url'] ?? null);