pub trait Handler: Sync + Send {
fn handle<'life0, 'life1, 'async_trait>(
&'life0 self,
event: &'life1 Event
) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where
'life0: 'async_trait,
'life1: 'async_trait,
Self: 'async_trait;
}