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: module.go
    path of file: ./repos/agones/vendor/golang.org/x/mod/module
    
    the code of the file until where you have to start completion: // Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package module defines the module.Version type along with support code.
//
// The [module.Version] type is a simple Path, Version pair:
//
//	type Version struct {
//		Path string
//		Version string
//	}
//
// There are no restrictions imposed directly by use 
    
func splitGopkgIn(path string) (prefix, pathMajor string, ok bool) {
	if !strings.HasPrefix(path, "gopkg.in/") {
		return path, "", false
	}
	i := len(path)
	if strings.HasSuffix(path, "-unstable") {
		i -= len("-unstable")
	}
	for i > 0 && ('0' <= path[i-1] && path[i-1] <= '9') {
		i--
	}
	if i <= 1 || path[i-1] != 'v' || path[i-2] != '.' {
		// All gopkg.in paths must end in vN for some N.
		return path, "", false
	}
	prefix, pathMajor = path[:i-2], path[i-2:]
	if len(pathMajor) <= 2 || pathMajor[2] == '0' && pathMajor != ".v0" {
		return path, "", false
	}
	return prefix, pathMajor, true
}