private function getLogArgs($cleared)
    {
        $cleared = \array_filter($cleared);
        if (!$cleared) {
            return array();
        }
        $count = \count($cleared);
        $glue = $count == 2
            ? ' and '
            : ', ';
        if ($count > 2) {
            $cleared[$count-1] = 'and '.$cleared[$count-1];
        }
        $msg = 'Cleared '.\implode($glue, $cleared);
        if ($this->channelName) {
            return array(
                $msg.' %c(%s)',
                'background-color:#c0c0c0; padding:0 .33em;',
                $this->channelName,
            );
        }
        return array($msg);
    }