pub trait ExtendWrite: Send + Sync {
// Required method
fn write_all<'life0, 'life1, 'async_trait>(
&'life0 mut self,
buf: &'life1 [u8],
) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait;
// Provided method
fn write_all_vectored<'life0, 'life1, 'life2, 'async_trait>(
&'life0 mut self,
bufs: &'life1 [IoSlice<'life2>],
) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
'life2: 'async_trait { ... }
}