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: filesystem_lock_windows.go
    path of file: ./repos/terraform/internal/states/statemgr
    
    the code of the file until where you have to start completion: // Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1

//go:build windows
// +build windows

package 
    
func (s *Filesystem) lock() error {
	log.Printf("[TRACE] statemgr.Filesystem: locking %s using LockFileEx", s.path)

	// even though we're failing immediately, an overlapped event structure is
	// required
	ol, err := newOverlapped()
	if err != nil {
		return err
	}
	defer syscall.CloseHandle(ol.HEvent)

	return lockFileEx(
		syscall.Handle(s.stateFileOut.Fd()),
		_LOCKFILE_EXCLUSIVE_LOCK|_LOCKFILE_FAIL_IMMEDIATELY,
		0,              // reserved
		0,              // bytes low
		math.MaxUint32, // bytes high
		ol,
	)
}