enumNode example

->scalarNode('connection')->defaultNull()->end()
                        ->end()
                    ->end()
                ->end()
            ->end()
            ->scalarNode('token_verifier')
                ->info('The service ID of a custom rememberme token verifier.')
            ->end();

        foreach ($this->options as $name => $value) {
            if ('secure' === $name) {
                $builder->enumNode($name)->values([true, false, 'auto'])->defaultValue('auto' === $value ? null : $value);
            } elseif ('samesite' === $name) {
                $builder->enumNode($name)->values([null, Cookie::SAMESITE_LAX, Cookie::SAMESITE_STRICT, Cookie::SAMESITE_NONE])->defaultValue($value);
            } elseif (\is_bool($value)) {
                $builder->booleanNode($name)->defaultValue($value);
            } elseif (\is_int($value)) {
                $builder->integerNode($name)->defaultValue($value);
            } else {
                $builder->scalarNode($name)->defaultValue($value);
            }
        }
    }

    

->end()
                ->integerNode('max_string_length')
                    ->info('Max length of displayed strings, -1 means no limit')
                    ->min(-1)
                    ->defaultValue(-1)
                ->end()
                ->scalarNode('dump_destination')
                    ->info('A stream URL where dumps should be written to')
                    ->example('php://stderr, or tcp://%env(VAR_DUMPER_SERVER)% when using the "server:dump" command')
                    ->defaultNull()
                ->end()
                ->enumNode('theme')
                    ->info('Changes the color of the dump() output when rendered directly on the templating. "dark" (default) or "light"')
                    ->example('dark')
                    ->values(['dark', 'light'])
                    ->defaultValue('dark')
                ->end()
        ;

        return $treeBuilder;
    }
}

private function addHttpCacheSection(ArrayNodeDefinition $rootNode): void
    {
        $rootNode
            ->children()
                ->arrayNode('http_cache')
                    ->info('HTTP cache configuration')
                    ->canBeEnabled()
                    ->fixXmlConfig('private_header')
                    ->children()
                        ->booleanNode('debug')->defaultValue('%kernel.debug%')->end()
                        ->enumNode('trace_level')
                            ->values(['none', 'short', 'full'])
                        ->end()
                        ->scalarNode('trace_header')->end()
                        ->integerNode('default_ttl')->end()
                        ->arrayNode('private_headers')
                            ->performNoDeepMerging()
                            ->scalarPrototype()->end()
                        ->end()
                        ->arrayNode('skip_response_headers')
                            ->performNoDeepMerging()
                            ->scalarPrototype()->end()
                        

use Symfony\Config\PrimitiveTypesConfig;

return static function DPrimitiveTypesConfig $config) {
    $config->booleanNode(true);
    $config->enumNode('foo');
    $config->floatNode(47.11);
    $config->integerNode(1337);
    $config->scalarNode('foobar');
    $config->scalarNodeWithDefault(null);
};

->scalarNode('child_node')->end()
                        ->booleanNode('bool_force_cast')->end()
                        ->integerNode('int_unset_at_zero')
                            ->validate()
                                ->ifTrue(fn ($value) => 0 === $value)
                                ->thenUnset()
                            ->end()
                        ->end()
                    ->end()
                ->end()
                ->arrayNode('simple_array_node')->end()
                ->enumNode('enum_node')->values(['a', 'b'])->end()
                ->variableNode('variable_node')->end()
                ->scalarNode('string_node')
                    ->validate()
                        ->ifTrue(fn ($value) => !\is_string($value) || 'fail' === $value)
                        ->thenInvalid('%s is not a valid string')
                    ->end()
                ->end()
            ->end();

        return $treeBuilder;
    }
}

/** * Generates the configuration tree builder. */
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $tb = new TreeBuilder('security');
        $rootNode = $tb->getRootNode();

        $rootNode
            ->children()
                ->scalarNode('access_denied_url')->defaultNull()->example('/foo/error403')->end()
                ->enumNode('session_fixation_strategy')
                    ->values([SessionAuthenticationStrategy::NONE, SessionAuthenticationStrategy::MIGRATE, SessionAuthenticationStrategy::INVALIDATE])
                    ->defaultValue(SessionAuthenticationStrategy::MIGRATE)
                ->end()
                ->booleanNode('hide_user_not_found')->defaultTrue()->end()
                ->booleanNode('erase_credentials')->defaultTrue()->end()
                ->booleanNode('enable_authenticator_manager')->setDeprecated('symfony/security-bundle', '6.2', 'The "%node%" option at "%path%" is deprecated.')->defaultTrue()->end()
                ->arrayNode('access_decision_manager')
                    ->addDefaultsIfNotSet()
                    ->children()
                        ->enumNode('strategy')
                            ->values($this->getAccessDecisionStrategies())
                        

use Symfony\Component\Config\Tests\Fixtures\TestEnum;

class PrimitiveTypes implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $tb = new TreeBuilder('primitive_types');
        $rootNode = $tb->getRootNode();
        $rootNode
            ->children()
                ->booleanNode('boolean_node')->end()
                ->enumNode('enum_node')->values(['foo', 'bar', 'baz', TestEnum::Bar])->end()
                ->floatNode('float_node')->end()
                ->integerNode('integer_node')->end()
                ->scalarNode('scalar_node')->end()
                ->scalarNode('scalar_node_with_default')->defaultTrue()->end()
            ->end()
        ;

        return $tb;
    }
}

->scalarNode('scalar_empty')->end()
                ->scalarNode('scalar_null')->defaultNull()->end()
                ->scalarNode('scalar_true')->defaultTrue()->end()
                ->scalarNode('scalar_false')->defaultFalse()->end()
                ->scalarNode('scalar_default')->defaultValue('default')->end()
                ->scalarNode('scalar_array_empty')->defaultValue([])->end()
                ->scalarNode('scalar_array_defaults')->defaultValue(['elem1', 'elem2'])->end()
                ->scalarNode('scalar_required')->isRequired()->end()
                ->scalarNode('scalar_deprecated')->setDeprecated('vendor/package', '1.1')->end()
                ->scalarNode('scalar_deprecated_with_message')->setDeprecated('vendor/package', '1.1', 'Deprecation custom message for "%node%" at "%path%"')->end()
                ->scalarNode('node_with_a_looong_name')->end()
                ->enumNode('enum_with_default')->values(['this', 'that'])->defaultValue('this')->end()
                ->enumNode('enum')->values(['this', 'that', TestEnum::Ccc])->end()
                ->arrayNode('array')
                    ->info('some info')
                    ->canBeUnset()
                    ->children()
                        ->scalarNode('child1')->end()
                        ->scalarNode('child2')->end()
                        ->scalarNode('child3')
                            ->info(
                                "this is a long\n".
                                "multi-line info text\n".
                                

->scalarNode('url')->end()
                        ->scalarNode('visibility')->end()
                        ->variableNode('config')->end()
                    ->end()
                ->end()
                ->arrayNode('allowed_extensions')
                    ->prototype('scalar')->end()
                ->end()
                ->arrayNode('private_allowed_extensions')
                    ->prototype('scalar')->end()
                ->end()
                ->enumNode('private_local_download_strategy')
                    ->defaultValue('php')
                    ->values(['php', 'x-sendfile', 'x-accel'])
                ->end()
            ->end();

        return $rootNode;
    }

    private function createCdnSection(): ArrayNodeDefinition
    {
        $rootNode = (new TreeBuilder('cdn'))->getRootNode();