TaxonomyCrudHooks.php

<?php

declare (strict_types=1);
namespace Drupal\taxonomy_crud\Hook;

use Drupal\taxonomy\VocabularyInterface;
use Drupal\Core\Hook\Attribute\Hook;

/**
 * Hook implementations for taxonomy_crud.
 */
class TaxonomyCrudHooks {
  
  /**
   * Implements hook_ENTITY_TYPE_presave() for taxonomy_vocabulary entities.
   */
  public function taxonomyVocabularyPresave(VocabularyInterface $vocabulary) : void {
    $vocabulary->setThirdPartySetting('taxonomy_crud', 'foo', 'bar');
  }

}