Add a PodcastEpisode bundle class

modules/opd_podcast/opd_podcast.module

@@ -5,14 +5,26 @@ declare(strict_types=1);
 use Drupal\Core\Render\BubbleableMetadata;
 use Drupal\Core\StringTranslation\TranslatableMarkup;
 use Drupal\node\NodeInterface;
+use Drupal\opd_podcast\Entity\PodcastEpisode;
 use Drupal\taxonomy\TermInterface;
 
+/**
+ * Implements hook_entity_bundle_info_alter().
+ *
+ * @param array<non-empty-string, array{class: non-empty-string}> $bundles
+ */
+function opd_podcast_entity_bundle_info_alter(array &$bundles): void {
+  if (isset($bundles['node'])) {
+    $bundles['node'][PodcastEpisode::NODE_TYPE]['class'] = PodcastEpisode::class;
+  }
+}
+
 /**
  * @param array<non-empty-string, array<non-empty-string, array{}>> $links
  * @param array<non-empty-string, mixed> $context
  */
 function opd_podcast_node_links_alter(array &$links, NodeInterface $entity, array &$context): void {
-  if ($entity->bundle() !== 'podcast_episode') {
+  if (!$entity instanceof PodcastEpisode) {
     return;
   }
 
@@ -72,10 +84,9 @@ function opd_podcast_tokens(string $type, array $tokens, array $data, array $opt
       switch ($name) {
         case 'guest-names':
           $node = $data['node'] ?? NULL;
-          assert($node instanceof NodeInterface);
-          assert($node->hasField('field_podcast_guests'));
+          assert($node instanceof PodcastEpisode);
 
-          $guests = $node->get('field_podcast_guests')->referencedEntities();
+          $guests = $node->getGuests();
           assert(is_array($guests));
           assert(!is_null($guests[0]));
           assert($guests[0] instanceof TermInterface);

modules/opd_podcast/src/Entity/PodcastEpisode.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\opd_podcast\Entity;
+
+use Drupal\node\Entity\Node;
+use Drupal\node\NodeInterface;
+
+final class PodcastEpisode extends Node implements NodeInterface {
+
+  public const NODE_TYPE = 'podcast_episode';
+
+  public function getGuests(): array {
+    return $this->get('field_podcast_guests')->referencedEntities();
+  }
+
+}