Sketch in the normalizer

Closes #3506454

src/Activator/ActivatorInterface.php

@@ -5,7 +5,6 @@ declare(strict_types=1);
 namespace Drupal\project_browser\Activator;
 
 use Drupal\project_browser\ProjectBrowser\Project;
-use Symfony\Component\HttpFoundation\Response;
 
 /**
  * Defines an interface for services which can activate projects.
@@ -48,11 +47,9 @@ interface ActivatorInterface {
    * @param \Drupal\project_browser\ProjectBrowser\Project $project
    *   The project to activate.
    *
-   * @return \Symfony\Component\HttpFoundation\Response|null
-   *   Optionally, a response that should be presented to the user in Project
-   *   Browser. This could be a set of additional instructions to display in a
-   *   modal, for example, or a redirect to a configuration form.
+   * @return \Drupal\Core\Ajax\CommandInterface[]|null
+   *   Optionally, an array of AJAX commands to run on the front end.
    */
-  public function activate(Project $project): ?Response;
+  public function activate(Project $project): ?array;
 
 }