<?phpnamespace Exercise\HTMLPurifierBundle;use Exercise\HTMLPurifierBundle\DependencyInjection\Compiler\HTMLPurifierPass;use Symfony\Component\DependencyInjection\ContainerBuilder;use Symfony\Component\HttpKernel\Bundle\Bundle;class ExerciseHTMLPurifierBundle extends Bundle{    /**     * {@inheritdoc}     */    public function build(ContainerBuilder $container)    {        $container->addCompilerPass(new HTMLPurifierPass());    }}