public function handleJoin(
        \Erebot\Interfaces\EventHandler $handler,
        \Erebot\Interfaces\Event\Join   $event
    ) {
        $user       = $event->getSource();
        $nick       = $user->getNick();
        $collator   = $this->connection->getCollator();
        $normNick   = $collator->normalizeNick($nick);

        $this->updateUser(
            $nick,
            $user->getIdent(),
            $user->getHost(\Erebot\Interfaces\Identity::CANON_IPV6)
        );
        $key = array_search($normNick, $this->nicks);
        $this->chans[$event->getChan()][$key] = array();
    }