src/Parameter/DependencyInjection/Configuration.php
public function getConfigTreeBuilder()
    {
        $builder = new TreeBuilder;
        $node = $builder->root('ds_parameter');
        $node
            ->children()
                ->arrayNode('parameters')
                    ->prototype('array')
                        ->children()
                            ->scalarNode('title')
                            ->end()
                            ->scalarNode('key')
                            ->end()
                            ->booleanNode('encrypt')
                                ->defaultFalse()
                            ->end()
                        ->end()
                    ->end()
                ->end()
            ->end();

        return $builder;
    }
public function getConfigTreeBuilder()
    {
        $builder = new TreeBuilder;
        $node = $builder->root('ds_parameter');
        $node
            ->children()
                ->arrayNode('parameters')
                    ->prototype('array')
                        ->children()
                            ->scalarNode('title')
                            ->end()
                            ->scalarNode('key')
                            ->end()
                            ->booleanNode('encrypt')
                                ->defaultFalse()
                            ->end()
                        ->end()
                    ->end()
                ->end()
            ->end();

        return $builder;
    }
{@inheritdoc}