#![allow(unused)]

#[macro_use]
extern crate qdowncast;

use std::any::Any;

trait Foo: Any {}
qdowncastable!(Foo);
qdowncast_methods!(Foo);

struct FooBar;
impl Foo for FooBar {}

fn as_foobar<'a>(foo: &'a Foo) -> Option<&'a FooBar> {
    foo.downcast_ref()
}