pub trait AsyncIterator<E: Send + Sync + 'static>: Send + Sync {
type Item: Send + Sync;
// Required method
fn next<'life0, 'async_trait>(
&'life0 mut self,
) -> Pin<Box<dyn Future<Output = Result<Option<Self::Item>, E>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait;
}