RegisterServicesForDestructionPass.php

<?php

namespace Drupal\Core\DependencyInjection\Compiler;

use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;

/**
 * Adds services with specific tags to "kernel_destruct_subscriber" service.
 *
 * Only services tagged with "needs_destruction" are added.
 *
 * @see \Drupal\Core\DestructableInterface
 */
class RegisterServicesForDestructionPass implements CompilerPassInterface {
    
    /**
     * {@inheritdoc}
     */
    public function process(ContainerBuilder $container) {
        if (!$container->hasDefinition('kernel_destruct_subscriber')) {
            return;
        }
        $definition = $container->getDefinition('kernel_destruct_subscriber');
        $services = $container->findTaggedServiceIds('needs_destruction');
        foreach ($services as $id => $attributes) {
            $definition->addMethodCall('registerService', [
                $id,
            ]);
        }
    }

}