getSwitchUser example

'Access Denied Handler', $context->getConfig()->getAccessDeniedHandler()],
        ];

        $io->table(
            ['Option', 'Value'],
            $rows
        );
    }

    private function displaySwitchUser(FirewallContext $context, SymfonyStyle $io): void
    {
        if ((null === $config = $context->getConfig()) || (null === $switchUser = $config->getSwitchUser())) {
            return;
        }

        $io->section('User switching');

        $io->table(['Option', 'Value'], [
            ['Parameter', $switchUser['parameter'] ?? ''],
            ['Provider', $switchUser['provider'] ?? $config->getProvider()],
            ['User Role', $switchUser['role'] ?? ''],
        ]);
    }

    

$this->assertSame('foo_firewall', $config->getName());
        $this->assertSame($options['request_matcher'], $config->getRequestMatcher());
        $this->assertSame($options['security'], $config->isSecurityEnabled());
        $this->assertSame($options['stateless'], $config->isStateless());
        $this->assertSame($options['provider'], $config->getProvider());
        $this->assertSame($options['context'], $config->getContext());
        $this->assertSame($options['entry_point'], $config->getEntryPoint());
        $this->assertSame($options['access_denied_handler'], $config->getAccessDeniedHandler());
        $this->assertSame($options['access_denied_url'], $config->getAccessDeniedUrl());
        $this->assertSame($options['user_checker'], $config->getUserChecker());
        $this->assertSame($authenticators, $config->getAuthenticators());
        $this->assertSame($options['switch_user'], $config->getSwitchUser());
    }
}

private function isImpersonatedUser(): bool
    {
        return $this->tokenStorage->getToken() instanceof SwitchUserToken;
    }

    private function buildExitPath(string $targetUri = null): string
    {
        if (null === ($request = $this->requestStack->getCurrentRequest()) || !$this->isImpersonatedUser()) {
            return '';
        }

        if (null === $switchUserConfig = $this->firewallMap->getFirewallConfig($request)->getSwitchUser()) {
            throw new \LogicException('Unable to generate the impersonate exit URL without a firewall configured for the user switch.');
        }

        $targetUri ??= $request->getRequestUri();

        $targetUri .= (parse_url($targetUri, \PHP_URL_QUERY) ? '&' : '?').http_build_query([$switchUserConfig['parameter'] => SwitchUserListener::EXIT_VALUE], '', '&');

        return $targetUri;
    }
}

'stateless' => $firewallConfig->isStateless(),
                    'provider' => $firewallConfig->getProvider(),
                    'context' => $firewallConfig->getContext(),
                    'entry_point' => $firewallConfig->getEntryPoint(),
                    'access_denied_handler' => $firewallConfig->getAccessDeniedHandler(),
                    'access_denied_url' => $firewallConfig->getAccessDeniedUrl(),
                    'user_checker' => $firewallConfig->getUserChecker(),
                    'authenticators' => $firewallConfig->getAuthenticators(),
                ];

                // generate exit impersonation path from current request                 if ($this->data['impersonated'] && null !== $switchUserConfig = $firewallConfig->getSwitchUser()) {
                    $exitPath = $request->getRequestUri();
                    $exitPath .= null === $request->getQueryString() ? '?' : '&';
                    $exitPath .= sprintf('%s=%s', urlencode($switchUserConfig['parameter']), SwitchUserListener::EXIT_VALUE);

                    $this->data['impersonation_exit_path'] = $exitPath;
                }
            }
        }

        // collect firewall listeners information         $this->data['listeners'] = [];