trait PluginManagerDependentValidatorTrait in Drupal 10

trait PluginManagerDependentValidatorTrait {

  /**
   * The CKEditor 5 plugin manager.
   *
   * @var \Drupal\ckeditor5\Plugin\CKEditor5PluginManagerInterface
   */
  protected $pluginManager;

  /**
   * Constructs a CKEditor5ConstraintValidatorTrait object.
   *
   * @param \Drupal\ckeditor5\Plugin\CKEditor5PluginManagerInterface $plugin_manager
   *   The CKEditor 5 plugin manager.
   */
  public function __construct(CKEditor5PluginManagerInterface $plugin_manager) {
    $this->pluginManager = $plugin_manager;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('plugin.manager.ckeditor5.plugin'));
  }

  /**
   * Gets all other enabled CKEditor 5 plugin definitions.
   *
   * @param \Drupal\editor\EditorInterface $text_editor
   *   A Text Editor config entity configured to use CKEditor 5.
   * @param string $except
   *   A CKEditor 5 plugin ID to exclude: all enabled plugins other than this
   *   one are returned.
   *
   * @return \Drupal\ckeditor5\Plugin\CKEditor5PluginDefinition[]
   *   A list of CKEditor 5 plugin definitions keyed by plugin ID.
   */
  private function getOtherEnabledPlugins(EditorInterface $text_editor, string $except) : array {
    $enabled_plugins = $this->pluginManager
      ->getEnabledDefinitions($text_editor);
    unset($enabled_plugins[$except]);
    return $enabled_plugins;
  }

  /**
   * Gets all disabled CKEditor 5 plugin definitions the user can enable.
   *
   * @param \Drupal\editor\EditorInterface $text_editor
   *   A Text Editor config entity configured to use CKEditor 5.
   *
   * @return \Drupal\ckeditor5\Plugin\CKEditor5PluginDefinition[]
   *   A list of CKEditor 5 plugin definitions keyed by plugin ID.
   */
  private function getEnableableDisabledPlugins(EditorInterface $text_editor) {
    $disabled_plugins = array_diff_key($this->pluginManager
      ->getDefinitions(), $this->pluginManager
      ->getEnabledDefinitions($text_editor));

    // Only consider plugins that can be explicitly enabled by the user: plugins
    // that have a toolbar item and do not have conditions. Those are the only
    // plugins that are truly available for the site builder to enable without
    // other consequences.
    // In the future, we may choose to expand this, but it will require complex
    // infrastructure to generate messages that explain which of the conditions
    // are already fulfilled and which are not.
    $enableable_disabled_plugins = array_filter($disabled_plugins, function (CKEditor5PluginDefinition $definition) {
      return $definition
        ->hasToolbarItems() && !$definition
        ->hasConditions();
    });
    return $enableable_disabled_plugins;
  }

}