Nette\Utils\ObjectMixin::getExtensionMethod PHP Метод

    public static function getExtensionMethod($class, $name)
    {
        $list =& self::$extMethods[strtolower($name)];
        $cache =& $list[''][$class];
        if (isset($cache)) {
            return $cache;
        }
        foreach ([$class] + class_parents($class) + class_implements($class) as $cl) {
            if (isset($list[$cl])) {
                return $cache = $list[$cl];
            }
        }
        return $cache = FALSE;
    }

 /**
  * Adding method to class.
  *
  * @param $name
  * @param null $callback
  *
  * @throws \Nette\MemberAccessException
  * @return callable|null
  */
 public static function extensionMethod($name, $callback = NULL)
 {
     if (strpos($name, '::') === FALSE) {
         $class = get_called_class();
     } else {
         list($class, $name) = explode('::', $name);
     }
     if ($callback === NULL) {
         return ObjectMixin::getExtensionMethod($class, $name);
     } else {
         ObjectMixin::setExtensionMethod($class, $name, $callback);
     }
 }