public function getHelp(
        \Erebot\Interfaces\Event\Base\TextMessage $event,
        \Erebot\Interfaces\TextWrapper $words
    ) {
        if ($event instanceof \Erebot\Interfaces\Event\Base\PrivateMessage) {
            $target = $event->getSource();
            $chan   = null;
        } else {
            $target = $chan = $event->getChan();
        }

        if (count($words) == 1 && $words[0] === get_called_class()) {
            $msg = $this->getFormatter($chan)->_(
                "This module does not provide any command, but ".
                "provides lists of words that other modules may use."
            );
            $this->sendMessage($target, $msg);
            return true;
        }
    }