private function doSkip(string $line): bool
    {
        switch (true) {
            case (empty(trim($line))):
                // empty line
                $skip = true;
                break;
            case (1 == preg_match('/(#[\s\w]+)/', $line)):
                if (1 === $this->linecountOverall) {
                    $this->addName($line);
                }
                $skip = true;
                break;
            default:
                $skip = false;
        }

        return $skip;
    }