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: normalize.go
    path of file: ./repos/octant/vendor/github.com/containers/image/v5/docker/reference
    
    the code of the file until where you have to start completion: package reference

import (
	"errors"
	"fmt"
	"strings"

	"github.com/opencontainers/go-digest"
)

var (
	legacyDefaultDomain = "index.docker.io"
	defaultDomain       = "docker.io"
	officialRepoName    = "library"
	defaultTag          = "latest"
)

// normali
    
func ParseNormalizedNamed(s string) (Named, error) {
	if ok := anchoredIdentifierRegexp.MatchString(s); ok {
		return nil, fmt.Errorf("invalid repository name (%s), cannot specify 64-byte hexadecimal strings", s)
	}
	domain, remainder := splitDockerDomain(s)
	var remoteName string
	if tagSep := strings.IndexRune(remainder, ':'); tagSep > -1 {
		remoteName = remainder[:tagSep]
	} else {
		remoteName = remainder
	}
	if strings.ToLower(remoteName) != remoteName {
		return nil, errors.New("invalid reference format: repository name must be lowercase")
	}

	ref, err := Parse(domain + "/" + remainder)
	if err != nil {
		return nil, err
	}
	named, isNamed := ref.(Named)
	if !isNamed {
		return nil, fmt.Errorf("reference %s has no name", ref.String())
	}
	return named, nil
}