Kirby\Cli\Command::checkPath PHP Method

    protected function checkPath($path)
    {
        if (count(glob($path . '/*')) !== 0) {
            throw new RuntimeException('The folder is not empty: ' . realpath($path));
        }
        if (is_dir($path)) {
            throw new RuntimeException('The folder exists and cannot be overwritten: ' . realpath($path));
        }
    }