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: config.go
    path of file: ./repos/zrok/sdk/golang/sdk
    
    the code of the file until where you have to start completion: package sdk

import "github.com/pkg/errors"

const ZrokProxyConfig = "zrok.proxy.v1
    
func ParseAuthScheme(authScheme string) (AuthScheme, error) {
	switch authScheme {
	case string(None):
		return None, nil
	case string(Basic):
		return Basic, nil
	case string(Oauth):
		return Oauth, nil
	default:
		return None, errors.Errorf("unknown auth scheme '%v'", authScheme)
	}
}