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: auth.go
    path of file: ./repos/sliver/vendor/github.com/things-go/go-socks5/statute
    
    the code of the file until where you have to start completion: package statute

import (
	"fmt"
	"io"
)

// auth error defined
var (
	ErrUserAuthFailed  
    
func ParseUserPassReply(r io.Reader) (upr UserPassReply, err error) {
	bb := []byte{0, 0}
	if _, err = io.ReadFull(r, bb); err != nil {
		return
	}
	upr.Ver, upr.Status = bb[0], bb[1]
	return
}