Parent / child traits in rust

main.rs

trait Parent {
    fn print_x(&self) {
        println!("X is: {}", self.get_x());
    }
    
    fn get_x(&self) -> u16;
}

trait Child: Parent {
    fn child_fn(&self) {
        println!("child_fn...");
        self.print_x();
    }
}

struct A {
    x: u16
}

struct B {
    x: u16
}

impl A {
    fn a_only(&self) {
        println!("This is A");
    }
}

impl Parent for A {
    fn get_x(&self) -> u16 {
        self.x
    }
}

impl Child for A {}

impl Parent for B {
    fn get_x(&self) -> u16 {
        self.x
    }
}

impl Child for B {}

fn main() {
    let a = A{ x: 5 };
    a.a_only(); // Method implemented for this object only
    a.child_fn(); // Method implemented on shared trait

    let b = B { x: 10 };
    b.child_fn(); // Method implemented on shared trait
}