You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: format.go
    path of file: ./repos/sliver/vendor/github.com/miekg/dns
    
    the code of the file until where you have to start completion: package dns

import (
	"net"
	"reflect"
	"strc
    
func Field(r RR, i int) string {
	if i == 0 {
		return ""
	}
	d := reflect.ValueOf(r).Elem().Field(i)
	switch d.Kind() {
	case reflect.String:
		return d.String()
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		return strconv.FormatInt(d.Int(), 10)
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		return strconv.FormatUint(d.Uint(), 10)
	case reflect.Slice:
		switch reflect.ValueOf(r).Elem().Type().Field(i).Tag {
		case `dns:"a"`:
			// TODO(miek): Hmm store this as 16 bytes
			if d.Len() < net.IPv4len {
				return ""
			}
			if d.Len() < net.IPv6len {
				return net.IPv4(byte(d.Index(0).Uint()),
					byte(d.Index(1).Uint()),
					byte(d.Index(2).Uint()),
					byte(d.Index(3).Uint())).String()
			}
			return net.IPv4(byte(d.Index(12).Uint()),
				byte(d.Index(13).Uint()),
				byte(d.Index(14).Uint()),
				byte(d.Index(15).Uint())).String()
		case `dns:"aaaa"`:
			if d.Len() < net.IPv6len {
				return ""
			}
			return net.IP{
				byte(d.Index(0).Uint()),
				byte(d.Index(1).Uint()),
				byte(d.Index(2).Uint()),
				byte(d.Index(3).Uint()),
				byte(d.Index(4).Uint()),
				byte(d.Index(5).Uint()),
				byte(d.Index(6).Uint()),
				byte(d.Index(7).Uint()),
				byte(d.Index(8).Uint()),
				byte(d.Index(9).Uint()),
				byte(d.Index(10).Uint()),
				byte(d.Index(11).Uint()),
				byte(d.Index(12).Uint()),
				byte(d.Index(13).Uint()),
				byte(d.Index(14).Uint()),
				byte(d.Index(15).Uint()),
			}.String()
		case `dns:"nsec"`:
			if d.Len() == 0 {
				return ""
			}
			s := Type(d.Index(0).Uint()).String()
			for i := 1; i < d.Len(); i++ {
				s += " " + Type(d.Index(i).Uint()).String()
			}
			return s
		default:
			// if it does not have a tag its a string slice
			fallthrough
		case `dns:"txt"`:
			if d.Len() == 0 {
				return ""
			}
			s := d.Index(0).String()
			for i := 1; i < d.Len(); i++ {
				s += " " + d.Index(i).String()
			}
			return s
		}
	}
	return ""
}