private function addImagePlaceholderSection(ArrayNodeDefinition $rootNode)
    {
        $rootNode
            ->children()
                ->arrayNode('image_placeholder')
                    ->info('Configuration for strategy of replacing missing images')
                    ->useAttributeAsKey('name')
                    ->arrayPrototype()
                        ->children()
                            ->scalarNode('provider')
                            ->end()
                            ->variableNode('options')
                                ->defaultValue([])
                            ->end()
                        ->end()
                    ->end()
                ->end()
            ->end();
    }
private function addImagePlaceholderSection(ArrayNodeDefinition $rootNode)
    {
        $rootNode
            ->children()
                ->arrayNode('image_placeholder')
                    ->info('Configuration for strategy of replacing missing images')
                    ->useAttributeAsKey('name')
                    ->arrayPrototype()
                        ->children()
                            ->scalarNode('provider')
                            ->end()
                            ->variableNode('options')
                                ->defaultValue([])
                            ->end()
                        ->end()
                    ->end()
                ->end()
            ->end();
    }
private function addImagePlaceholderSection ( ArrayNodeDefinition $ rootNode ) { $ rootNode -> children ( ) -> arrayNode ( 'image_placeholder' ) -> info ( 'Configuration for strategy of replacing missing images' ) -> useAttributeAsKey ( 'name' ) -> arrayPrototype ( ) -> children ( ) -> scalarNode ( 'provider' ) -> end ( ) -> variableNode ( 'options' ) -> defaultValue ( [ ] ) -> end ( ) -> end ( ) -> end ( ) -> end ( ) -> end ( ) ; }
Defines configuration the images placeholder generation.

@param \Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition $rootNode
Defines configuration the images placeholder generation .