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diff --git a/web/modules/contrib/entityqueue/src/Controller/EntityQueueUIController.php b/web/modules/contrib/entityqueue/src/Controller/EntityQueueUIController.php
new file mode 100644
index 000000000..58be72fd2
--- /dev/null
+++ b/web/modules/contrib/entityqueue/src/Controller/EntityQueueUIController.php
@@ -0,0 +1,76 @@
+<?php
+
+namespace Drupal\entityqueue\Controller;
+
+use Drupal\Core\Controller\ControllerBase;
+use Drupal\entityqueue\EntityQueueInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Drupal\Core\Ajax\AjaxResponse;
+use Drupal\Core\Ajax\ReplaceCommand;
+
+/**
+ * Returns responses for Views UI routes.
+ */
+class EntityQueueUIController extends ControllerBase {
+
+  /**
+   * Provides a list of all the subqueues of an entity queue.
+   *
+   * @param \Drupal\entityqueue\EntityQueueInterface $entity_queue
+   *   The entity queue.
+   *
+   * @return array
+   *   A render array.
+   */
+  public function subqueueList(EntityQueueInterface $entity_queue) {
+    $list_builder = $this->entityTypeManager()->getListBuilder('entity_subqueue');
+    $list_builder->setQueueId($entity_queue->id());
+
+    return $list_builder->render();
+  }
+
+  /**
+   * Returns a form to add a new subqeue.
+   *
+   * @param \Drupal\entityqueue\EntityQueueInterface $entity_queue
+   *   The queue this subqueue will be added to.
+   *
+   * @return array
+   *   The entity subqueue add form.
+   */
+  public function addForm(EntityQueueInterface $entity_queue) {
+    $subqueue = $this->entityTypeManager()->getStorage('entity_subqueue')->create(['queue' => $entity_queue->id()]);
+    return $this->entityFormBuilder()->getForm($subqueue);
+  }
+
+  /**
+   * Calls a method on an entity queue and reloads the listing page.
+   *
+   * @param \Drupal\entityqueue\EntityQueueInterface $entity_queue
+   *   The view being acted upon.
+   * @param string $op
+   *   The operation to perform, e.g., 'enable' or 'disable'.
+   * @param \Symfony\Component\HttpFoundation\Request $request
+   *   The current request.
+   *
+   * @return \Drupal\Core\Ajax\AjaxResponse|\Symfony\Component\HttpFoundation\RedirectResponse
+   *   Either returns a rebuilt listing page as an AJAX response, or redirects
+   *   back to the listing page.
+   */
+  public function ajaxOperation(EntityQueueInterface $entity_queue, $op, Request $request) {
+    // Perform the operation.
+    $entity_queue->$op()->save();
+
+    // If the request is via AJAX, return the rendered list as JSON.
+    if ($request->request->get('js')) {
+      $list = $this->entityTypeManager()->getListBuilder('entity_queue')->render();
+      $response = new AjaxResponse();
+      $response->addCommand(new ReplaceCommand('#entity-queue-list', $list));
+      return $response;
+    }
+
+    // Otherwise, redirect back to the page.
+    return $this->redirect('entity.entity_queue.collection');
+  }
+
+}