@Override
            public OperationTracer getManagedTracer(final int txIndex, final Hash txHash)
                throws Exception {
              var traceDest =
                  new FileOutputStream(
                      outDir
                          .resolve(
                              String.format("trace-%d-%s.jsonl", txIndex, txHash.toHexString()))
                          .toFile());

              var jsonTracer =
                  new StandardJsonTracer(
                      new PrintStream(traceDest),
                      parentCommand.showMemory,
                      !parentCommand.hideStack,
                      parentCommand.showReturnData,
                      parentCommand.showStorage,
                      parentCommand.eip3155strict);
              outputStreams.put(jsonTracer, traceDest);
              return jsonTracer;
            }
Constructor for the T8nSubCommand class with a parent command. This constructor is required by
PicoCLI.

@param parentCommand The parent command for this sub command.
ethereum/evmtool/src/main/java/org/hyperledger/besu/evmtool/T8nSubCommand.java