src/doc/book/listings/ch07-managing-growing-projects/listing-07-11/src/lib.rs

// ANCHOR: here
mod front_of_house {
    pub mod hosting {
        pub fn add_to_waitlist() {}
    }
}

use crate::front_of_house::hosting;

pub fn eat_at_restaurant() {
    hosting::add_to_waitlist();
    hosting::add_to_waitlist();
    hosting::add_to_waitlist();
}
// ANCHOR_END: here

fn main() {}