private EthStatus status() {
    if (status == null) {
      final RLPInput input = RLP.input(data);
      status = EthStatus.readFrom(input);
    }
    return status;
  }
Return The block range of the associated node's local blockchain. (Eth/69)

@return The block range of the associated node's local blockchain.
ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/messages/StatusMessage.java