type golang.org/x/sync/errgroup.token

5 uses

	golang.org/x/sync/errgroup (current package)
		errgroup.go#L18: type token struct{}
		errgroup.go#L30: 	sem chan token
		errgroup.go#L71: 		g.sem <- token{}
		errgroup.go#L96: 		case g.sem <- token{}:
		errgroup.go#L134: 	g.sem = make(chan token, n)