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: dhcpv4.go
    path of file: ./repos/hubble-ui/backend/vendor/github.com/google/gopacket/layers
    
    the code of the file until where you have to start completion: // Copyright 2016 Google, Inc. All rights reserved.
//
// Use of this source code
    
func (o DHCPMsgType) String() string {
	switch o {
	case DHCPMsgTypeUnspecified:
		return "Unspecified"
	case DHCPMsgTypeDiscover:
		return "Discover"
	case DHCPMsgTypeOffer:
		return "Offer"
	case DHCPMsgTypeRequest:
		return "Request"
	case DHCPMsgTypeDecline:
		return "Decline"
	case DHCPMsgTypeAck:
		return "Ack"
	case DHCPMsgTypeNak:
		return "Nak"
	case DHCPMsgTypeRelease:
		return "Release"
	case DHCPMsgTypeInform:
		return "Inform"
	default:
		return "Unknown"
	}
}