Function acceptor_p2

pub fn acceptor_p2<'a, P: PaxosPayload, S: Clone>(
    acceptor_tick: &Tick<Cluster<'a, Acceptor>>,
    a_max_ballot: Singleton<Ballot, Tick<Cluster<'a, Acceptor>>, Bounded>,
    p_to_acceptors_p2a: Stream<P2a<P, S>, Cluster<'a, Acceptor>, Unbounded, NoOrder>,
    a_checkpoint: Optional<usize, Cluster<'a, Acceptor>, Unbounded>,
    proposers: &Cluster<'a, S>,
) -> (Singleton<(Option<usize>, HashMap<usize, LogValue<P>>), Atomic<Cluster<'a, Acceptor>>, Unbounded>, Stream<((usize, Ballot), Result<(), Ballot>), Cluster<'a, S>, Unbounded, NoOrder>)