/**
  * The singleton method.
  *
  * @return Muut_Admin_Contextual_Help The instance.
  * @author Paul Hughes
  * @since  3.0
  */
 public static function instance()
 {
     if (!is_a(self::$instance, __CLASS__)) {
         self::$instance = new self();
     }
     return self::$instance;
 }
 /**
  * Initializes the admin contextual help menu class.
  *
  * @return void
  * @author Paul Hughes
  * @since 3.0
  */
 public function initContextualHelp()
 {
     $class = 'Muut_Admin_Contextual_Help';
     if (!in_array($class, $this->alreadyInit)) {
         require_once muut()->getPluginPath() . 'lib/admin/admin-contextual-help.class.php';
         if (class_exists($class)) {
             Muut_Admin_Contextual_Help::instance();
         }
         $this->alreadyInit[] = $class;
     }
 }