public function renderShadowMark($count, $current, $eolInterval = 60)
    {
        $this->progressCount++;
        $this->write('<fg=blue;options=bold>S</fg=blue;options=bold>', false);
        if (($this->progressCount % $eolInterval) == 0) {
            $counter = str_pad($this->progressCount, 5, ' ', STR_PAD_LEFT);
            $this->write(
                ' |' . $counter . ' ('
                . str_pad($current, strlen($count), ' ', STR_PAD_LEFT)
                . '/' . $count . ')' . PHP_EOL,
                false
            );
        }
    }