[FrameworkBundle][Serializer] Add option to register a "circular_reference_handler"

Author: lyrixx

DependencyInjection/Configuration.php

@@ -686,6 +686,7 @@ private function addSerializerSection(ArrayNodeDefinition $rootNode)
                         ->booleanNode('enable_annotations')->{!class_exists(FullStack::class) && class_exists(Annotation::class) ? 'defaultTrue' : 'defaultFalse'}()->end()
                         ->scalarNode('cache')->end()
                         ->scalarNode('name_converter')->end()
+                        ->scalarNode('circular_reference_handler')->end()
                     ->end()
                 ->end()
             ->end()

DependencyInjection/FrameworkExtension.php

@@ -1281,6 +1281,10 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
         if (isset($config['name_converter']) && $config['name_converter']) {
             $container->getDefinition('serializer.normalizer.object')->replaceArgument(1, new Reference($config['name_converter']));
         }
+
+        if (isset($config['circular_reference_handler']) && $config['circular_reference_handler']) {
+            $container->getDefinition('serializer.normalizer.object')->addMethodCall('setCircularReferenceHandler', array(new Reference($config['circular_reference_handler'])));
+        }
     }
 
     /**