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: net_route.go
    path of file: ./repos/trickster/vendor/github.com/prometheus/procfs
    
    the code of the file until where you have to start completion: // Copyright 2023 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"
)

const (
	blackholeRepresentation string = "*"
	blackholeIfaceName      string = "blackhole"
	routeLineColumns        int    = 11
)

// A NetRouteLine represents one line from net/route.
type NetRouteLine struct {
	Iface       string
	Destination uint32
	Gateway     uint32
	Flags       uint32
	RefCnt      uint32
	Use         uint32
	Metric      uint32
	Mask        uint32
	MTU         uint32
	Window      uint32
	IRTT        uint32
}

func (fs FS) NetRoute() ([]NetRouteLine, error) {
	return readNetRoute(fs.proc.Path("net", "route"))
}

func readNetRoute(path string) ([]NetRouteLine, error) {
	b, err := util.ReadFileNoStat(path)
	if err != nil {
		return nil, err
	}

	routelines, err := parseNetRoute(bytes.NewReader(b))
	if err != nil {
		return nil
    
func parseNetRouteLine(fields []string) (*NetRouteLine, error) {
	if len(fields) != routeLineColumns {
		return nil, fmt.Errorf("invalid routeline, num of digits: %d", len(fields))
	}
	iface := fields[0]
	if iface == blackholeRepresentation {
		iface = blackholeIfaceName
	}
	destination, err := strconv.ParseUint(fields[1], 16, 32)
	if err != nil {
		return nil, err
	}
	gateway, err := strconv.ParseUint(fields[2], 16, 32)
	if err != nil {
		return nil, err
	}
	flags, err := strconv.ParseUint(fields[3], 10, 32)
	if err != nil {
		return nil, err
	}
	refcnt, err := strconv.ParseUint(fields[4], 10, 32)
	if err != nil {
		return nil, err
	}
	use, err := strconv.ParseUint(fields[5], 10, 32)
	if err != nil {
		return nil, err
	}
	metric, err := strconv.ParseUint(fields[6], 10, 32)
	if err != nil {
		return nil, err
	}
	mask, err := strconv.ParseUint(fields[7], 16, 32)
	if err != nil {
		return nil, err
	}
	mtu, err := strconv.ParseUint(fields[8], 10, 32)
	if err != nil {
		return nil, err
	}
	window, err := strconv.ParseUint(fields[9], 10, 32)
	if err != nil {
		return nil, err
	}
	irtt, err := strconv.ParseUint(fields[10], 10, 32)
	if err != nil {
		return nil, err
	}
	routeline := &NetRouteLine{
		Iface:       iface,
		Destination: uint32(destination),
		Gateway:     uint32(gateway),
		Flags:       uint32(flags),
		RefCnt:      uint32(refcnt),
		Use:         uint32(use),
		Metric:      uint32(metric),
		Mask:        uint32(mask),
		MTU:         uint32(mtu),
		Window:      uint32(window),
		IRTT:        uint32(irtt),
	}
	return routeline, nil
}