Robo\Task\Remote\Rsync::getPathSpec PHP Method

    protected function getPathSpec($host, $user, $path)
    {
        $spec = isset($path) ? $path : '';
        if (!empty($host)) {
            $spec = "{$host}:{$spec}";
        }
        if (!empty($user)) {
            $spec = "{$user}@{$spec}";
        }
        return $spec;
    }