docs: public StyleSet setAlign(HorizontalAlignment halign, VerticalAlignment valign) {
  		StyleUtil.setAlign(this.headCellStyle, halign, valign);
  		StyleUtil.setAlign(this.cellStyle, halign, valign);
  		StyleUtil.setAlign(this.cellStyleForNumber, halign, valign);
  		StyleUtil.setAlign(this.cellStyleForDate, halign, valign);
  		return this;
  	}