Hello everybody! I am trying to learn bevy with book called " Game programming in rust" . But every time I am trying to run example code from the book ,it fail to run. Here is the example code from the book and maybe you could tell if there is a syntax error or something else?The book is written at the time when 0.13 version was latest version and that was the version I used as well. I got more problems using 0.16 version with this code. Any ideas,all help is much appreciated.This code snippet is written as it is in the book.

use bevy::prelude::*;

fn main(){
App::new()
.add_plugins(DefaultPlugins)
.add_startup_system(setup_camera)
.run()
}

fn setup_camera(mut commands: Commands){
commands.spawn(Camera2dBundle::default());
}

and the error message I got running this code:

error[E0599]: no method named add_startup_system found for mutable reference >
--> src/main.rs:6:6
|
4 | / App::new()
5 | | .add_plugins(DefaultPlugins)
6 | | .add_startup_system(setup_camera)
| |-^^^^^^^^^^^^^^^^^^
|
help: there is a method add_systems with a similar name, but with different a>
--> /home/user/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/bevy_ap>
|
442 | / pub fn add_systems(
443 | | &mut self,
444 | | schedule: impl ScheduleLabel,
445 | | systems: impl IntoSystemConfigs,
446 | | ) -> &mut Self {
| |_____________^