trait Jelly {
    fn foo(&self) {}
}

struct Jone;
impl Jelly for Jone {
    // fn git(self) {}
}
struct Jtwo;
impl Jelly for Jtwo {
    // fn git(self) {}
}

fn main() {
    let js: Vec<Box<dyn Jelly>> = vec![
        Box::new(Jone {}),
        Box::new(Jtwo {}),
    ];

    for b in js.into_iter() {
        b.foo();
    }
}