code: func (p Path) Convert() string {
  	if len(p) == 0 {
  		return ""
  	}
  	var op []string
  	for _, id := range p {
  		op = append(op, id.String())
  	}
  	str := strings.Join(op, SepInDatabase)
  	return strings.Replace(str, "-", "_", -1)
  }
docs: // Convert returns ltree compatible string of UUID slice
  // 39fa8c5b_5732_436f_a084_0f2a247f3435.87762c8b_17f9_4cbb_b355_251b6a524f2f