private function indent($output, $asArray = false)
    {
        $lines = explode("\n", $output);
        $out = [];
        foreach ($lines as $line) {
            $out[] = '   > ' . $line;
        }
        if ($asArray) {
            return $out;
        }
        $return = implode("\n", $out);
        return $return;
    }