private MiningConfiguration getMiningParameters() {
      final Wei minTransactionGasPrice = Wei.ZERO;
      // Extradata and coinbase can be configured on a per-block level via the json file
      final Address coinbase = Address.ZERO;
      final Bytes extraData = Bytes.EMPTY;
      return ImmutableMiningConfiguration.builder()
          .mutableInitValues(
              MutableInitValues.builder()
                  .nonceGenerator(new IncrementingNonceGenerator(0))
                  .extraData(extraData)
                  .minTransactionGasPrice(minTransactionGasPrice)
                  .coinbase(coinbase)
                  .build())
          .build();
    }
blocks import sub-command

<p>Imports blocks from a file into the database
app/src/main/java/org/hyperledger/besu/cli/subcommands/blocks/BlocksSubCommand.java