pub trait FamaPipe<Args, O> {
// Required method
fn receive_pipe_content<'life0, 'async_trait>(
&'life0 self,
args: Args,
) -> Pin<Box<dyn Future<Output = O> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait;
// Provided method
fn to_pipe(self) -> Box<Self>
where Self: Sized { ... }
}