@SuppressWarnings("StreamResourceLeak")
  Stream<String> fileStreamReader(final String filePath) {
    try {
      return Files.lines(Paths.get(filePath))
          // skip comments
          .filter(line -> !line.startsWith("#"))
          // strip out non-alphanumeric characters
          .map(line -> line.replaceAll("[^a-zA-Z0-9]", ""));
    } catch (Exception ex) {
      throw new RuntimeException(ex);
    }
  }
Instantiates a new TxParse sub command.

@param out the PrintWriter where validation results will be reported.
app/src/main/java/org/hyperledger/besu/cli/subcommands/TxParseSubCommand.java