func NewStringSliceFlag(name string, usage string) *[]string {
	var ss stringSliceFlag
	flag.Var(&ss, name, usage)
	return (*[]string)(&ss)
}
func NewStringSliceFlag(name string, usage string) *[]string {
	var ss stringSliceFlag
	flag.Var(&ss, name, usage)
	return (*[]string)(&ss)
}
// NewStringSliceFlag creates a new string slice flag. The default value is always nil.