code: func Dump(arr []byte) string {
  	var buf bytes.Buffer
  
  	buf.WriteString("(")
  	buf.WriteString(fmt.Sprintf("%v", len(arr)))
  	buf.WriteString(" bytes)[")
  
  	for idx, b := range arr {
  		buf.WriteString(fmt.Sprintf("%v", b))
  		if idx != len(arr)-1 {
  			buf.WriteString(", ")
  		}
  	}
  
  	buf.WriteString("], Hex: [")
  
  	for idx, b := range arr {
  		buf.WriteString(fmt.Sprintf("%X", b))
  		if idx != len(arr)-1 {
  			buf.WriteString(" ")
  		}
  	}
  
  	buf.WriteString("], Base64Url:")
  	buf.WriteString(base64url.Encode(arr))
  
  	return buf.String()
  }
docs: // Dump produces printable debug representation of byte array as string