Kdyby\Doctrine\EntityManager::extensionMethod PHP Method

    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);
        }
    }