const time.Nanosecond

5 uses

	time (current package)
		format.go#L1359: 	"ns": int64(Nanosecond),
		time.go#L602: 	Nanosecond  Duration = 1
		time.go#L603: 	Microsecond          = 1000 * Nanosecond

	os
		exec_unix.go#L101: 	return time.Duration(p.rusage.Utime.Nano()) * time.Nanosecond
		exec_unix.go#L105: 	return time.Duration(p.rusage.Stime.Nano()) * time.Nanosecond