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: proc_snmp.go
    path of file: ./repos/k6/vendor/github.com/prometheus/procfs
    
    the code of the file until where you have to start completion: // Copyright 2022 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package procfs

import (
	"bufio"
	"bytes"
	"fmt"
	"io"
	"strconv"
	"strings"

	"github.com/prometheus/procfs/internal/util"
)

// ProcSnmp models the content of /proc/<pid>/net/snmp.
type ProcSnmp struct {
	// The process ID.
	PID int
	Ip
	Icmp
	IcmpMsg
	Tcp
	Udp
	UdpLite
}

type Ip struct { // nolint:revive
	Forwarding      *float64
	DefaultTTL      *float64
	InReceives      *float64
	InHdrErrors     *float64
	InAddrErrors    *float64
	ForwDatagrams   *float64
	InUnknownProtos *float64
	InDiscards      *float64
	InDelivers      *float64
	OutRequests     *float64
	OutDiscards     *float64
	OutNoRoutes     *float64
	ReasmTimeout    *float64
	ReasmReqds      *float64
	ReasmOKs        *float64
	ReasmFails      *float64
	FragOKs         *float64
	FragFails       *float64
	FragCreates     *float64
}

type Icmp struct { // nolint:revive
	InMsgs           *float64
	InErrors         *float64
	InCsumErrors     *float64
	InDestUnreachs   *float64
	InTimeExcds      *float64
	InParmProbs      *float64
	InSrcQuenchs     *float64
	InRedirects      *float64
	InEchos          *float64
	InEchoReps       *float64
	InTimestamps     *float64
	InTimestampReps  *float64
	InAddrMasks      *float64
	InAddrMaskReps   *float64
	OutMsgs          *float64
	OutErrors        *float64
	OutDestUnreachs  *float64
	OutTimeExcds     *float64
	OutParmProbs     *float64
	OutSrcQuenchs    *float64
	OutRedirects     *float64
	OutEchos         *float64
	OutEchoReps      *float64
	OutTimestamps    *float64
	OutTimestampReps *float64
	OutAddrMasks     *float64
	OutAddrMaskReps  *float64
}

type IcmpMsg struct {
	InType3  *float64
	OutType3 *float64
}

type Tcp struct { // nolint:revive
	RtoAlgorithm *float64
	RtoMin       *float64
	RtoMax       *float64
	MaxConn      *float64
	ActiveOpens  *float64
	PassiveOpens *float64
	AttemptFails *float64
	EstabResets  *float64
	CurrEstab    *float64
	InSegs       *float64
	OutSegs      *float64
	RetransSegs  *float64
	InErrs       *float64
	OutRsts      *float64
	InCsumErrors *float64
}

type Udp struct { // nolint:revive
	InDatagrams  *float64
	NoPorts      *float64
	InErrors     *float64
	OutDatagrams *float64
	RcvbufErrors *float64
	SndbufErrors *float64
	InCsumErrors *float64
	IgnoredMulti *float64
}

type UdpLite struct { // nolint:revive
	InDatagrams  *float64
	NoPorts      *float64
	InErrors     *float64
	OutDatagrams *float64
	RcvbufErrors *float64
	SndbufErrors *float64
	InCsumErrors *float64
	IgnoredMulti *float64
}

func (p Proc) Snmp() (ProcSnmp, error) {
	filename := p.path("net/snmp")
	data, err := util.ReadFileNoStat(filename)
	if err != nil {
		return ProcSnmp{PID: p.PID}, err
	}
	procSnmp, err := parseSnmp(bytes.NewReader(data), filename)
	procSnmp.PID = p.PID
	return procSnmp, err
}

// parseSnmp parses the metrics from proc/<pid>/net/snmp file
// and returns a map contains those metrics (e.g. {"Ip": {"Forwarding": 2}}).
func parseSnmp(r io.Reader, fileName string) (ProcSnmp, error) {
	var (
		scanner  = bufio.NewScanner(r)
		procSnmp = ProcSnmp{}
	)

	for scanner.Scan() {
		nameParts := strings.Split(scanner.Text(), " ")
		scanner.Scan()
		valueParts := strings.Split(scanner.Text(), " ")
		// Remove trailing :.
		protocol := strings.TrimSuffix(nameParts[0], ":")
		if len(nameParts) != len(valueParts) {
			return procSnmp, fmt.Errorf("mismatch field count mismatch in %s: %s",
				fileName, protocol)
		}
		for i := 1; i < len(nameParts); i++ {
			value, err := strconv.ParseFloat(valueParts[i], 64)
			if err != nil {
				return procSnmp, err
			}
			key := nameParts[i]

			switch protocol {
			case "Ip":
				switch key {
				case "Forwarding":
					procSnmp.Ip.Forwarding = &value
				case "DefaultTTL":
					procSnmp.Ip.DefaultTTL = &value
				case "InReceives":
					procSnmp.Ip.InReceives = &value
				case "InHdrErrors":
					procSnmp.Ip.InHdrErrors = &value
				case "InAddrErrors":
					procSnmp.Ip.InAddrErrors = &value
				case "ForwDatagrams":
					procSnmp.Ip.ForwDatagrams = &value
				case "InUnknownProtos":
					procSnmp.Ip.InUnknownProtos = &value
				case "InDiscards":
					procSnmp.Ip.InDiscards = &value
				case "InDelivers":
					procSnmp.Ip.InDelivers = &value
				case "OutRequests":
					procSnmp.Ip.OutRequests = &value
				case "OutDiscards":
					procSnmp.Ip.OutDiscards = &value
				case "OutNoRoutes":
					procSnmp.Ip.OutNoRoutes = &value
				case "ReasmTimeout":
					procSnmp.Ip.ReasmTimeout = &value
				case "ReasmReqds":
					procSnmp.Ip.ReasmReqds = &value
				case "ReasmOKs":
					procSnmp.Ip.ReasmOKs = &value
				case "ReasmFails":
					procSnmp.Ip.ReasmFails = &value
				case "FragOKs":
					procSnmp.Ip.FragOKs = &value
				case "FragFails":
					procSnmp.Ip.FragFails = &value
				case "FragCreates":
					procSnmp.Ip.FragCreates = &value
				}
			case "Icmp":
				switch key {
				case "InMsgs":
					procSnmp.Icmp.InMsgs = &value
				case "InErrors":
					procSnmp.Icmp.InErrors = &value
				case 
    
func parseSnmp(r io.Reader, fileName string) (ProcSnmp, error) {
	var (
		scanner  = bufio.NewScanner(r)
		procSnmp = ProcSnmp{}
	)

	for scanner.Scan() {
		nameParts := strings.Split(scanner.Text(), " ")
		scanner.Scan()
		valueParts := strings.Split(scanner.Text(), " ")
		// Remove trailing :.
		protocol := strings.TrimSuffix(nameParts[0], ":")
		if len(nameParts) != len(valueParts) {
			return procSnmp, fmt.Errorf("mismatch field count mismatch in %s: %s",
				fileName, protocol)
		}
		for i := 1; i < len(nameParts); i++ {
			value, err := strconv.ParseFloat(valueParts[i], 64)
			if err != nil {
				return procSnmp, err
			}
			key := nameParts[i]

			switch protocol {
			case "Ip":
				switch key {
				case "Forwarding":
					procSnmp.Ip.Forwarding = &value
				case "DefaultTTL":
					procSnmp.Ip.DefaultTTL = &value
				case "InReceives":
					procSnmp.Ip.InReceives = &value
				case "InHdrErrors":
					procSnmp.Ip.InHdrErrors = &value
				case "InAddrErrors":
					procSnmp.Ip.InAddrErrors = &value
				case "ForwDatagrams":
					procSnmp.Ip.ForwDatagrams = &value
				case "InUnknownProtos":
					procSnmp.Ip.InUnknownProtos = &value
				case "InDiscards":
					procSnmp.Ip.InDiscards = &value
				case "InDelivers":
					procSnmp.Ip.InDelivers = &value
				case "OutRequests":
					procSnmp.Ip.OutRequests = &value
				case "OutDiscards":
					procSnmp.Ip.OutDiscards = &value
				case "OutNoRoutes":
					procSnmp.Ip.OutNoRoutes = &value
				case "ReasmTimeout":
					procSnmp.Ip.ReasmTimeout = &value
				case "ReasmReqds":
					procSnmp.Ip.ReasmReqds = &value
				case "ReasmOKs":
					procSnmp.Ip.ReasmOKs = &value
				case "ReasmFails":
					procSnmp.Ip.ReasmFails = &value
				case "FragOKs":
					procSnmp.Ip.FragOKs = &value
				case "FragFails":
					procSnmp.Ip.FragFails = &value
				case "FragCreates":
					procSnmp.Ip.FragCreates = &value
				}
			case "Icmp":
				switch key {
				case "InMsgs":
					procSnmp.Icmp.InMsgs = &value
				case "InErrors":
					procSnmp.Icmp.InErrors = &value
				case "InCsumErrors":
					procSnmp.Icmp.InCsumErrors = &value
				case "InDestUnreachs":
					procSnmp.Icmp.InDestUnreachs = &value
				case "InTimeExcds":
					procSnmp.Icmp.InTimeExcds = &value
				case "InParmProbs":
					procSnmp.Icmp.InParmProbs = &value
				case "InSrcQuenchs":
					procSnmp.Icmp.InSrcQuenchs = &value
				case "InRedirects":
					procSnmp.Icmp.InRedirects = &value
				case "InEchos":
					procSnmp.Icmp.InEchos = &value
				case "InEchoReps":
					procSnmp.Icmp.InEchoReps = &value
				case "InTimestamps":
					procSnmp.Icmp.InTimestamps = &value
				case "InTimestampReps":
					procSnmp.Icmp.InTimestampReps = &value
				case "InAddrMasks":
					procSnmp.Icmp.InAddrMasks = &value
				case "InAddrMaskReps":
					procSnmp.Icmp.InAddrMaskReps = &value
				case "OutMsgs":
					procSnmp.Icmp.OutMsgs = &value
				case "OutErrors":
					procSnmp.Icmp.OutErrors = &value
				case "OutDestUnreachs":
					procSnmp.Icmp.OutDestUnreachs = &value
				case "OutTimeExcds":
					procSnmp.Icmp.OutTimeExcds = &value
				case "OutParmProbs":
					procSnmp.Icmp.OutParmProbs = &value
				case "OutSrcQuenchs":
					procSnmp.Icmp.OutSrcQuenchs = &value
				case "OutRedirects":
					procSnmp.Icmp.OutRedirects = &value
				case "OutEchos":
					procSnmp.Icmp.OutEchos = &value
				case "OutEchoReps":
					procSnmp.Icmp.OutEchoReps = &value
				case "OutTimestamps":
					procSnmp.Icmp.OutTimestamps = &value
				case "OutTimestampReps":
					procSnmp.Icmp.OutTimestampReps = &value
				case "OutAddrMasks":
					procSnmp.Icmp.OutAddrMasks = &value
				case "OutAddrMaskReps":
					procSnmp.Icmp.OutAddrMaskReps = &value
				}
			case "IcmpMsg":
				switch key {
				case "InType3":
					procSnmp.IcmpMsg.InType3 = &value
				case "OutType3":
					procSnmp.IcmpMsg.OutType3 = &value
				}
			case "Tcp":
				switch key {
				case "RtoAlgorithm":
					procSnmp.Tcp.RtoAlgorithm = &value
				case "RtoMin":
					procSnmp.Tcp.RtoMin = &value
				case "RtoMax":
					procSnmp.Tcp.RtoMax = &value
				case "MaxConn":
					procSnmp.Tcp.MaxConn = &value
				case "ActiveOpens":
					procSnmp.Tcp.ActiveOpens = &value
				case "PassiveOpens":
					procSnmp.Tcp.PassiveOpens = &value
				case "AttemptFails":
					procSnmp.Tcp.AttemptFails = &value
				case "EstabResets":
					procSnmp.Tcp.EstabResets = &value
				case "CurrEstab":
					procSnmp.Tcp.CurrEstab = &value
				case "InSegs":
					procSnmp.Tcp.InSegs = &value
				case "OutSegs":
					procSnmp.Tcp.OutSegs = &value
				case "RetransSegs":
					procSnmp.Tcp.RetransSegs = &value
				case "InErrs":
					procSnmp.Tcp.InErrs = &value
				case "OutRsts":
					procSnmp.Tcp.OutRsts = &value
				case "InCsumErrors":
					procSnmp.Tcp.InCsumErrors = &value
				}
			case "Udp":
				switch key {
				case "InDatagrams":
					procSnmp.Udp.InDatagrams = &value
				case "NoPorts":
					procSnmp.Udp.NoPorts = &value
				case "InErrors":
					procSnmp.Udp.InErrors = &value
				case "OutDatagrams":
					procSnmp.Udp.OutDatagrams = &value
				case "RcvbufErrors":
					procSnmp.Udp.RcvbufErrors = &value
				case "SndbufErrors":
					procSnmp.Udp.SndbufErrors = &value
				case "InCsumErrors":
					procSnmp.Udp.InCsumErrors = &value
				case "IgnoredMulti":
					procSnmp.Udp.IgnoredMulti = &value
				}
			case "UdpLite":
				switch key {
				case "InDatagrams":
					procSnmp.UdpLite.InDatagrams = &value
				case "NoPorts":
					procSnmp.UdpLite.NoPorts = &value
				case "InErrors":
					procSnmp.UdpLite.InErrors = &value
				case "OutDatagrams":
					procSnmp.UdpLite.OutDatagrams = &value
				case "RcvbufErrors":
					procSnmp.UdpLite.RcvbufErrors = &value
				case "SndbufErrors":
					procSnmp.UdpLite.SndbufErrors = &value
				case "InCsumErrors":
					procSnmp.UdpLite.InCsumErrors = &value
				case "IgnoredMulti":
					procSnmp.UdpLite.IgnoredMulti = &value
				}
			}
		}
	}
	return procSnmp, scanner.Err()
}