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: registry.go
    path of file: ./repos/keel/registry
    
    the code of the file until where you have to start completion: package registry

import (
	"errors"
	"hash/fnv"
	"os"
	"strings"
	"sync"

	"github.com/keel-hq/keel/registry/docker"

	log "github.com/sirupsen/logrus"
)

// EnvInsecure - uses insecure registry client to skip cert verification
const EnvInsecure = "INSECURE_REGISTRY"

/
    
func (c *DefaultClient) Get(opts Opts) (*Repository, error) {

	// fallback to HTTP if the registry doesn't speak HTTPS https://github.com/keel-hq/keel/issues/331
INIT_CLIENT:
	hub, err := c.getRegistryClient(opts.Registry, opts.Username, opts.Password)
	if err != nil {
		return nil, err
	}

	tags, err := hub.Tags(opts.Name)
	if err != nil {
		if strings.Contains(err.Error(), "server gave HTTP response to HTTPS client") && strings.HasPrefix(opts.Registry, "https://") && c.insecure {
			opts.Registry = strings.Replace(opts.Registry, "https://", "http://", 1)
			goto INIT_CLIENT
		}
		return nil, err
	}
	repo := &Repository{
		Tags: tags,
	}

	return repo, nil
}