@Override
    public boolean isSet(_Fields field) {
      if (field == null) {
        throw new java.lang.IllegalArgumentException();
      }

      switch (field) {
      case TABLE_VARIABLE:
        return isSetTableVariable();
      case COMMAND_TYPE:
        return isSetCommandType();
      case START_INDEX:
        return isSetStartIndex();
      case END_INDEX:
        return isSetEndIndex();
      }
      throw new java.lang.IllegalStateException();
    }
@Override
    public boolean isSet(_Fields field)