async fn fetch_leaf_from_proposals<Mode: TransactionMode>(
tx: &mut Transaction<Mode>,
req: LeafRequest<SeqTypes>,
) -> Result<Option<(Leaf2, QuorumCertificate2<SeqTypes>)>>
async fn fetch_leaf_from_proposals<Mode: TransactionMode>(
tx: &mut Transaction<Mode>,
req: LeafRequest<SeqTypes>,
) -> Result<Option<(Leaf2, QuorumCertificate2<SeqTypes>)>>