defaultTrue example

    }

    private function addProfilerSection(ArrayNodeDefinition $rootNode): void
    {
        $rootNode
            ->children()
                ->arrayNode('profiler')
                    ->info('profiler configuration')
                    ->canBeEnabled()
                    ->children()
                        ->booleanNode('collect')->defaultTrue()->end()
                        ->scalarNode('collect_parameter')->defaultNull()->info('The name of the parameter to use to enable or disable collection on a per request basis')->end()
                        ->booleanNode('only_exceptions')->defaultFalse()->end()
                        ->booleanNode('only_main_requests')->defaultFalse()->end()
                        ->scalarNode('dsn')->defaultValue('file:%kernel.cache_dir%/profiler')->end()
                        ->booleanNode('collect_serializer_data')->info('Enables the serializer data collector and profiler panel')->defaultFalse()->end()
                    ->end()
                ->end()
            ->end()
        ;
    }

    

    public function canBeDisabled(): static
    {
        $this
            ->addDefaultsIfNotSet()
            ->treatFalseLike(['enabled' => false])
            ->treatTrueLike(['enabled' => true])
            ->treatNullLike(['enabled' => true])
            ->children()
                ->booleanNode('enabled')
                    ->defaultTrue()
        ;

        return $this;
    }

    /** * Disables the deep merging of the node. * * @return $this */
    public function performNoDeepMerging(): static
    {

->end()
                    ->end()
                ->end()
                ->arrayNode('keyed_list_object')
                    ->useAttributeAsKey('class')
                    ->prototype('array')
                        ->beforeNormalization()
                            ->ifTrue(fn ($v) => !\is_array($v))
                            ->then(fn ($v) => ['enabled' => $v])
                        ->end()
                        ->children()
                            ->booleanNode('enabled')->defaultTrue()->end()
                            ->arrayNode('settings')
                                ->prototype('scalar')->end()
                            ->end()
                        ->end()
                    ->end()
                ->end()
                ->arrayNode('nested')
                    ->children()
                        ->arrayNode('nested_object')
                            ->addDefaultsIfNotSet()
                            ->beforeNormalization()
                                

class ExampleConfiguration implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $treeBuilder = new TreeBuilder('acme_root');

        $treeBuilder->getRootNode()
            ->fixXmlConfig('parameter')
            ->fixXmlConfig('connection')
            ->fixXmlConfig('cms_page')
            ->children()
                ->booleanNode('boolean')->defaultTrue()->end()
                ->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()
                

use Symfony\Component\Config\Definition\ConfigurationInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Extension\Extension;

class TestDumpExtension extends Extension implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $treeBuilder = new TreeBuilder('test_dump');
        $treeBuilder->getRootNode()
            ->children()
                ->booleanNode('enabled')->defaultTrue()->end()
            ->end()
        ;

        return $treeBuilder;
    }

    public function load(array $configs, ContainerBuilder $container): void
    {
    }

    public function getConfiguration(array $config, ContainerBuilder $container): 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;
    }
}

    private function createApiSection(): ArrayNodeDefinition
    {
        $rootNode = (new TreeBuilder('api'))->getRootNode();
        $rootNode
            ->children()
                ->arrayNode('rate_limiter')
                    ->useAttributeAsKey('name')
                    ->arrayPrototype()
                        ->children()
                            ->booleanNode('enabled')->defaultTrue()->end()
                            ->scalarNode('lock_factory')->defaultValue('lock.factory')->end()
                            ->scalarNode('policy')->end()
                            ->scalarNode('limit')->end()
                            ->scalarNode('cache_pool')->defaultValue('cache.rate_limiter')->end()
                            ->scalarNode('interval')->end()
                            ->scalarNode('reset')->end()
                            ->arrayNode('rate')
                                ->children()
                                    ->scalarNode('interval')->end()
                                    ->integerNode('amount')->defaultValue(1)->end()
                                ->end()
                            

->scalarNode('secret')
                ->cannotBeEmpty()
                ->defaultValue('%kernel.secret%')
            ->end()
            ->scalarNode('service')->end()
            ->arrayNode('user_providers')
                ->beforeNormalization()
                    ->ifString()->then(fn ($v) => [$v])
                ->end()
                ->prototype('scalar')->end()
            ->end()
            ->booleanNode('catch_exceptions')->defaultTrue()->end()
            ->arrayNode('signature_properties')
                ->prototype('scalar')->end()
                ->requiresAtLeastOneElement()
                ->info('An array of properties on your User that are used to sign the remember-me cookie. If any of these change, all existing cookies will become invalid.')
                ->example(['email', 'password'])
                ->defaultValue(['password'])
            ->end()
            ->arrayNode('token_provider')
                ->beforeNormalization()
                    ->ifString()->then(fn ($v) => ['service' => $v])
                ->end()
                

    /** * @return void */
    public function addConfiguration(NodeDefinition $node)
    {
        $builder = $node->children();

        $builder
            ->scalarNode('provider')->end()
            ->booleanNode('remember_me')->defaultTrue()->end()
            ->scalarNode('success_handler')->end()
            ->scalarNode('failure_handler')->end()
        ;

        foreach (array_merge($this->options, $this->defaultSuccessHandlerOptions, $this->defaultFailureHandlerOptions) as $name => $default) {
            if ('require_previous_session' === $name) {
                $builder
                    ->booleanNode($name)
                    ->setDeprecated('symfony/security-bundle', '6.4', 'Option "%node%" at "%path%" is deprecated, it will be removed in version 7.0. Setting it has no effect anymore.')
                    ->defaultValue($default);
            } elseif (\is_bool($default)) {
                

        $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())
                        ->end()
                        ->scalarNode('service')->end()
                        ->scalarNode('strategy_service')->end()
                        ->booleanNode('allow_if_all_abstain')->defaultFalse()->end()