Issue #3458479: Require at least Drupal 10.3 and remove any usage of deprecated classes, methods, constants, or functions

Closes #3458479

modules/file_example/src/FileExampleSubmitHandlerHelper.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\file_example;
 
+use Drupal\Core\Extension\ModuleHandlerInterface;
 use Drupal\Core\File\Event\FileUploadSanitizeNameEvent;
 use Drupal\Core\File\FileExists;
 use Drupal\Core\File\FileSystemInterface;
@@ -37,6 +38,8 @@ class FileExampleSubmitHandlerHelper {
    *   The file system.
    * @param \Symfony\Component\EventDispatcher\EventDispatcherInterface $eventDispatcher
    *   The event dispatcher.
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $moduleHandler
+   *   The module handler.
    *
    * @see https://php.watch/versions/8.0/constructor-property-promotion
    */
@@ -47,7 +50,8 @@ public function __construct(
     protected MessengerInterface $messenger,
     protected FileRepositoryInterface $fileRepository,
     protected FileSystemInterface $fileSystem,
-    protected EventDispatcherInterface $eventDispatcher
+    protected EventDispatcherInterface $eventDispatcher,
+    protected ModuleHandlerInterface $moduleHandler,
   ) {
   }
 
@@ -457,7 +461,7 @@ public function handleDirectoryExists(array &$form, FormStateInterface $form_sta
    */
   public function handleShowSession(array &$form, FormStateInterface $form_state) {
     $dumper = $this->dumper();
-    if ($dumper instanceof DevelDumperInterface) {
+    if ($this->isDevelDumper($dumper)) {
       // If the devel module is installed, use its nicer message format.
       $dumper->dump($this->sessionHelperWrapper->getStoredData(), $this->t('Entire $_SESSION["file_example"]'));
     }
@@ -484,4 +488,22 @@ public function handleResetSession(array &$form, FormStateInterface $form_state)
     $this->messenger->addMessage('Session reset.');
   }
 
+    /**
+     * Checks if the given object is an instance of DevelDumperInterface.
+     *
+     * @param object $object
+     *   The object to check.
+     *
+     * @return bool
+     *   Returns TRUE if the object is an instance of DevelDumperInterface,
+     *   FALSE otherwise.
+     */
+    protected function isDevelDumper(object $object): bool {
+    if ($this->moduleHandler->moduleExists('devel')) {
+      return $object instanceof DevelDumperInterface;
+    }
+
+    return FALSE;
+  }
+
 }