Trait Clock
pub trait Clock:
Send
+ Sync
+ Debug
+ 'static {
// Required methods
fn now_ns(&self) -> i64;
fn sleep_until<'life0, 'async_trait>(
&'life0 self,
deadline_ns: i64,
) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait;
// Provided method
fn sleep<'life0, 'async_trait>(
&'life0 self,
duration: Duration,
) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait { ... }
}