@Override
  public void clear() {
    this.slice = null;
    setRowsIsSet(false);
    this.rows = 0;
    setColsIsSet(false);
    this.cols = 0;
    this.format = null;
    this.type = null;
    this.max = null;
    this.min = null;
    this.headers = null;
    this.data = null;
  }
@Override
  public void clear()