@Override
  public int getRoundNumberFrom(final org.hyperledger.besu.plugin.data.BlockHeader header) {
    final BlockHeader headerFromChain = getHeaderFromChain(header);
    final BftExtraData extraData = bftBlockInterface.getExtraData(headerFromChain);
    return extraData.getRound();
  }
Instantiates a new Bft query service.

@param blockInterface the block interface
@param blockchain the blockchain
@param validatorProvider the validator provider
@param nodeKey the node key
@param consensusMechanismName the consensus mechanism name
consensus/common/src/main/java/org/hyperledger/besu/consensus/common/bft/queries/BftQueryServiceImpl.java