private void broadcastToPeer(final EthPeer peer, final BlockRangeUpdateMessage message) {
    if (LOG.isDebugEnabled()) {
      LOG.debug(
          "Broadcasting blockRange=[{}, {}, {}] to peer={}",
          message.getEarliestBlockNumber(),
          message.getLatestBlockNumber(),
          message.getBlockHash(),
          peer.getLoggableId());
    }
    try {
      peer.send(message);
    } catch (PeerConnection.PeerNotConnected e) {
      LOG.trace("Failed to broadcast blockRange to peer {}", peer.getLoggableId(), e);
    }
  }
Broadcasts the block range update message to a specific peer.

@param peer the peer to send the message to
@param message the block range update message
ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/sync/BlockRangeBroadcaster.java