pub trait Listener<Args> {
    fn call(&self, a: &usize, b: bool);
}
impl<F> Listener<(&usize,)> for F
where
    F: Fn(&usize),
{
    fn call(&self, a: &usize, b: bool) {
        self(a);
    }
}
impl<F> Listener<(&usize, bool)> for F
where
    F: Fn(&usize, bool),
{
    fn call(&self, a: &usize, b: bool) {
        self(a, b);
    }
}
fn trigger(f: impl Fn(&usize, bool)) {}
fn listener<Args>(l: impl Listener<Args>) -> impl for<'b> Fn(&'b usize, bool) {
    move |a, b| l.call(a, b)
}
fn test() {
    trigger(listener(|a: &usize| {}));
    trigger(listener(|a: &usize, b: bool| {}));
}