Function futures_util::stream::select_with_strategy::poll_side

fn poll_side<St1, St2, Clos, State>(
    select: &mut SelectWithStrategyProj<'_, St1, St2, Clos, State>,
    side: PollNext,
    cx: &mut Context<'_>
) -> Poll<Option<St1::Item>>where
    St1: Stream,
    St2: Stream<Item = St1::Item>,