private function addDoctrineSection(ArrayNodeDefinition $rootNode)
    {
        $rootNode
            ->children()
                ->arrayNode('doctrine')
                    ->info('doctrine configuration')
                    ->canBeEnabled()
                    ->children()
                        ->booleanNode('enabled')->defaultTrue()->end()
                    ->end()
                ->end()
            ->end()
        ;
    }
private function addDoctrineSection(ArrayNodeDefinition $rootNode)
    {
        $rootNode
            ->children()
                ->arrayNode('doctrine')
                    ->info('doctrine configuration')
                    ->canBeEnabled()
                    ->children()
                        ->booleanNode('enabled')->defaultTrue()->end()
                    ->end()
                ->end()
            ->end()
        ;
    }
private function addDoctrineSection ( ArrayNodeDefinition $ rootNode ) { $ rootNode -> children ( ) -> arrayNode ( 'doctrine' ) -> info ( 'doctrine configuration' ) -> canBeEnabled ( ) -> children ( ) -> booleanNode ( 'enabled' ) -> defaultTrue ( ) -> end ( ) -> end ( ) -> end ( ) -> end ( ) ; }
Add doctrine section.

@param ArrayNodeDefinition $rootNode
Add doctrine section .