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: start_windows.go
    path of file: ./repos/nanobox/util/service
    
    the code of the file until where you have to start completion: package service

import (
	"fmt"
	"strings"

	"golang.org/x/sys/windows/svc/mgr"
)

func Start(name string) error {
	m, err := mgr.Connect()
	if err != nil {
		return err
	}
	defer m.Disconnect()

	s, err := m.OpenService(name)
	if err != nil {
		return fmt.Errorf("could not access service: %v", err)
	}
	defer s.Close()

	err =
    
func Start(name string) error {
	m, err := mgr.Connect()
	if err != nil {
		return err
	}
	defer m.Disconnect()

	s, err := m.OpenService(name)
	if err != nil {
		return fmt.Errorf("could not access service: %v", err)
	}
	defer s.Close()

	err = s.Start()
	if err != nil {
		if strings.Contains(err.Error(), "already running") {
			return nil
		}
		return fmt.Errorf("could not start service: %v", err)
	}

	return nil
}