in dth/common.go [154:164]
func appendPrefix(key, prefix *string) *string {
if prefix == nil || *prefix == "" || *prefix == "/" {
return key
}
delimiter := ""
if !strings.HasSuffix(*prefix, "/") {
delimiter = "/"
}
newkey := fmt.Sprintf("%s%s%s", *prefix, delimiter, *key)
return &newkey
}