async fn process_new_block_data<CN, LN>(
    aggregator: &mut Aggregator<'_, CN, LN>,
    block: BlockId,
    metrics: &TimingBlockMetrics
)
where CN: Network<RmcNetworkData<BlockHash, Signature, SignatureSet<Signature>>>, LN: Network<RmcNetworkData<BlockHash, Signature, SignatureSet<Signature>>>,