private function userSymfonyDataTransformer(ContainerBuilder $container, $user)
    {
        $container->setDefinition(
            'bengor.user_bundle.security.' . $user . '_symfony_data_transformer',
            new Definition(
                UserSymfonyDataTransformer::class
            )
        )->setPublic(false);

        $container->setAlias(
            'bengor_user.' . $user . '.symfony_data_transformer',
            'bengor.user_bundle.security.' . $user . '_symfony_data_transformer'
        );
    }