Initial Drupal 11 with DDEV setup

vendor/league/container/src/ServiceProvider/ServiceProviderAggregateInterface.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace League\Container\ServiceProvider;
+
+use IteratorAggregate;
+use League\Container\ContainerAwareInterface;
+
+interface ServiceProviderAggregateInterface extends ContainerAwareInterface, IteratorAggregate
+{
+    public function add(ServiceProviderInterface $provider): ServiceProviderAggregateInterface;
+    public function provides(string $id): bool;
+    public function register(string $service): void;
+}