void maybeMoveField(final ObjectNode jsonObject, final String oldField, final String newField) {
    if (jsonObject.has(oldField)) {
      jsonObject.set(newField, jsonObject.remove(oldField));
    }
  }
Constructs a new B11rSubCommand with the given parent command.

@param parentCommand the parent command of this subcommand
ethereum/evmtool/src/main/java/org/hyperledger/besu/evmtool/B11rSubCommand.java