pub trait Handler<Msg: Message + Send + Sync>{
// Required method
fn handle<'life0, 'life1, 'async_trait>(
&'life0 mut self,
message: Msg,
ctx: &'life1 mut ActorHandlerContext,
) -> Pin<Box<dyn Future<Output = Msg::Result> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait;
}