Attribute Macro ambassador::delegatable_trait_remote

#[delegatable_trait_remote]

Make an existing trait that lives outside you crate available for delegation.

This can be done by copy-pasting the existing traits signature into your code under this attribute

use ambassador::{Delegate, delegatable_trait_remote};
use std::fmt::Display;

#[delegatable_trait_remote]
trait Display {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error>;
}

struct Cat;

impl Display for Cat {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error>{
        f.write_str("Cat")
    }
}

#[derive(Delegate)]
#[delegate(Display)] // <-------- Delegate implementation of Display to struct field
pub struct WrappedCat(Cat);