pub trait WorkerPoolAsyncInf<M: Send + Sized + Unpin + 'static>: Send + Sync {
// Required methods
fn submit<'life0, 'async_trait>(
&'life0 self,
msg: M,
) -> Pin<Box<dyn Future<Output = Option<M>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait;
fn try_submit(&self, msg: M) -> Option<M>;
}