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: numeric.go
    path of file: ./repos/plik/vendor/github.com/boombuler/barcode/qr
    
    the code of the file until where you have to start completion: package qr

import (
	"errors"
	"fmt"
	"strconv"

	"github.com/boombuler/barcode/utils"
)

func encodeNumeric(content string, ecl ErrorCorrectionLevel) (*utils.BitList, *versionInfo, error) {
	contentBitCount := (len(content) / 3) * 10
	switch len(content) % 3 {
	case 1:
		contentBitCount += 4
	case 2:
		contentBitCount += 7
	}
	vi := findSmallestVersionInfo(ecl, numericMode, contentBitCount)
	if vi == nil {
		return nil, nil, errors.New
    
func encodeNumeric(content string, ecl ErrorCorrectionLevel) (*utils.BitList, *versionInfo, error) {
	contentBitCount := (len(content) / 3) * 10
	switch len(content) % 3 {
	case 1:
		contentBitCount += 4
	case 2:
		contentBitCount += 7
	}
	vi := findSmallestVersionInfo(ecl, numericMode, contentBitCount)
	if vi == nil {
		return nil, nil, errors.New("To much data to encode")
	}
	res := new(utils.BitList)
	res.AddBits(int(numericMode), 4)
	res.AddBits(len(content), vi.charCountBits(numericMode))

	for pos := 0; pos < len(content); pos += 3 {
		var curStr string
		if pos+3 <= len(content) {
			curStr = content[pos : pos+3]
		} else {
			curStr = content[pos:]
		}

		i, err := strconv.Atoi(curStr)
		if err != nil || i < 0 {
			return nil, nil, fmt.Errorf("\"%s\" can not be encoded as %s", content, Numeric)
		}
		var bitCnt byte
		switch len(curStr) % 3 {
		case 0:
			bitCnt = 10
		case 1:
			bitCnt = 4
			break
		case 2:
			bitCnt = 7
			break
		}

		res.AddBits(i, bitCnt)
	}

	addPaddingAndTerminator(res, vi)
	return res, vi, nil
}