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: version1.go
    path of file: ./repos/gotosocial/vendor/github.com/google/uuid
    
    the code of the file until where you have to start completion: // Copyright 2016 Google Inc.  All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package uuid

import (
	"encoding/binary"
)

// NewUUID returns a Version 1 UUID based on the current NodeID and clock
// sequence, and the current time.  If the NodeID has not been set by SetNodeID
// or SetNodeInterface then it will be set automatically.  If the NodeID cannot
// be set NewUUID returns nil.  If clock sequence has not been set by
// SetClockSequence then it will b
    
func NewUUID() (UUID, error) {
	var uuid UUID
	now, seq, err := GetTime()
	if err != nil {
		return uuid, err
	}

	timeLow := uint32(now & 0xffffffff)
	timeMid := uint16((now >> 32) & 0xffff)
	timeHi := uint16((now >> 48) & 0x0fff)
	timeHi |= 0x1000 // Version 1

	binary.BigEndian.PutUint32(uuid[0:], timeLow)
	binary.BigEndian.PutUint16(uuid[4:], timeMid)
	binary.BigEndian.PutUint16(uuid[6:], timeHi)
	binary.BigEndian.PutUint16(uuid[8:], seq)

	nodeMu.Lock()
	if nodeID == zeroID {
		setNodeInterface("")
	}
	copy(uuid[10:], nodeID[:])
	nodeMu.Unlock()

	return uuid, nil
}