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: humanize.go
    path of file: ./repos/client/go/kbtime
    
    the code of the file until where you have to start completion: package kbtime

import (
	"fmt"
	"strings"
	"time"

	humanize "github.com/dustin/go-humanize"
)

// RelTime is a thin wrapper around github.com/dustin/go-humanize
// in order to provide more accurate data for large durations.
// Below description is from go-humanize:
//
// RelTime format
    
func RelTime(a, b time.Time, albl, blbl string) string {
	lbl := albl
	diff := b.Sub(a)
	yearDiff := b.Year() - a.Year()
	after := a.After(b)
	if after {
		lbl = blbl
		diff = a.Sub(b)
		yearDiff = a.Year() - b.Year()
	}
	if diff > 18*humanize.Month {
		if lbl != "" {
			lbl = " " + lbl
		}
		pl := ""
		if yearDiff > 1 {
			pl = "s"
		}
		return fmt.Sprintf("%d year%s%s", yearDiff, pl, lbl)
	}

	return strings.TrimSuffix(humanize.RelTime(a, b, albl, blbl), " ")
}