pub trait Subscriber {
type SubscriptionRequest;
type Publication;
type Error;
// Required method
fn subscribe<'life0, 'life1, 'async_trait>(
&'life0 mut self,
subscription: &'life1 Self::SubscriptionRequest,
) -> Pin<Box<dyn Future<Output = Result<Subscription<Self::Publication>, Self::Error>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait;
}