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: hint_dmesg_timestamp.go
    path of file: ./repos/darktile/internal/app/darktile/hinters
    
    the code of the file until where you have to start completion: package hinters

import (
	"regexp"
	"strconv"
	"strings"
	"time"

	"github.com/liamg/darktile/internal/app/darktile/termutil"
)

func init() {
	register(&DmesgTimestampHinter{}, PriorityVeryLow)
	setSysStartTime()
}

var sysStart time.Time

type DmesgTimesta
    
func (h *DmesgTimestampHinter) Activate(api HintAPI, match string, start termutil.Position, end termutil.Position) error {
	match = strings.Split(strings.Trim(match, "[] "), ".")[0]
	seconds, err := strconv.ParseFloat(match, 32)
	if err != nil {
		return err
	}
	result := sysStart.Add(time.Duration(seconds) * time.Second).Format(time.ANSIC)
	api.Highlight(start, end, result, nil)
	return nil
}