File: vendor/symfony/symfony/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/xml/customTemplateEscapingGuesser.xml

<?xml version="1.0" ?>

<container xmlns="http://symfony.com/schema/dic/services"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:twig="http://symfony.com/schema/dic/twig"
           xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd
                        http://symfony.com/schema/dic/twig http://symfony.com/schema/dic/twig/twig-1.0.xsd">

    <twig:config autoescape-service="my_project.some_bundle.template_escaping_guesser" autoescape-service-method="guess" />
</container>