pub trait MessageFor<A: Actor + ?Sized>: Send + 'static {
// Required method
fn handle<'life0, 'life1, 'async_trait>(
self: Box<Self>,
actor: &'life0 mut A,
ctx: &'life1 mut A::Context,
) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait;
}