getRandomBundle example

// Select a random number of references between the last 50 referenceable     // entities created.     if ($referenceable = $selection_handler->getReferenceableEntities(NULL, 'CONTAINS', 50)) {
      $group = array_rand($referenceable);
      $values['target_id'] = array_rand($referenceable[$group]);
      return $values;
    }

    // Attempt to create a sample entity, avoiding recursion.     $entity_storage = \Drupal::entityTypeManager()->getStorage($options['target_type']);
    if ($entity_storage instanceof ContentEntityStorageInterface) {
      $bundle = static::getRandomBundle($entity_type, $options);

      // Track the generated entity by reference type, target type, and bundle.       $key = $field_definition->getTargetEntityTypeId() . ':' . $options['target_type'] . ':' . $bundle;

      // If entity generation was attempted but did not finish, do not continue.       if (isset($recursion_tracker[$key])) {
        return [];
      }

      // Mark this as an attempt at generation.       $recursion_tracker[$key] = TRUE;