Issue #3233587: Create a build test that tests calling API as cleanly as possible

src/Event/UpdateRefreshSubscriber.php

+<?php
+
+namespace Drupal\automatic_updates\Event;
+
+use Drupal\automatic_updates\AutomaticUpdatesEvents;
+use Drupal\update\UpdateManagerInterface;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * Clears stale update data once a staged update has been committed.
+ */
+class UpdateRefreshSubscriber implements EventSubscriberInterface {
+
+  /**
+   * The update manager service.
+   *
+   * @var \Drupal\update\UpdateManagerInterface
+   */
+  protected $updateManager;
+
+  /**
+   * Constructs an UpdateRefreshSubscriber object.
+   *
+   * @param \Drupal\update\UpdateManagerInterface $update_manager
+   *   The update manager service.
+   */
+  public function __construct(UpdateManagerInterface $update_manager) {
+    $this->updateManager = $update_manager;
+  }
+
+  /**
+   * Clears stale update data.
+   */
+  public function clearData(): void {
+    $this->updateManager->refreshUpdateData();
+    update_storage_clear();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    return [
+      AutomaticUpdatesEvents::POST_COMMIT => ['clearData', 1000],
+    ];
+  }
+
+}