ctx, cancel := context.WithTimeout(context.Background(), time.Second) defer cancel() select { case <-time.After(2 * time.Second): fmt.Println("overslept") case <-ctx.Done(): fmt.Println(ctx.Err()) }This code creates a context with a one-second timeout and uses a select statement to ensure that the context is not cancelled prematurely. If the context is cancelled due to a timeout, the `ctx.Err()` function will return a timeout error. Overall, the Context Err package is an important part of the Go net library and provides a way to manage context across network connections.