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: multiwait.go
    path of file: ./repos/goka/multierr
    
    the code of the file until where you have to start completion: package multierr

import (
	"context"
	"sync"
)

type MultiWait struct {
	ctx context.Context
	wg  sync.Wait
    
func (mw *MultiWait) Done() <-chan struct{} {
	done := make(chan struct{})
	go func() {
		defer close(done)
		mw.wg.Wait()
	}()
	return done
}