clientv3/op.go
func withTop(target SortTarget, order SortOrder) []OpOption {
	return []OpOption{WithPrefix(), WithSort(target, order), WithLimit(1)}
}
func withTop(target SortTarget, order SortOrder) []OpOption {
	return []OpOption{WithPrefix(), WithSort(target, order), WithLimit(1)}
}
func withTop ( target SortTarget , order SortOrder ) [ ] OpOption { return [ ] OpOption { WithPrefix ( ) , WithSort ( target , order ) , WithLimit ( 1 ) } }
// withTop gets the first key over the get's prefix given a sort order
withTop gets the first key over the get s prefix given a sort order