public static MainnetHardforkId mostRecent() {
      return Stream.of(MainnetHardforkId.values())
          .filter(MainnetHardforkId::finalized)
          .max(Comparator.naturalOrder())
          .orElseThrow();
    }
The most recent finalized mainnet hardfork Besu supports. This will change across versions
and will be updated after mainnet activations.

@return the most recently activated mainnet spec.
datatypes/src/main/java/org/hyperledger/besu/datatypes/HardforkId.java