text: public String formatAsString() {if(isWholeColumnReference()) {returnCellReference.convertNumToColString(_firstCell.getCol())+ ":" +CellReference.convertNumToColString(_lastCell.getCol());}StringBuilder sb = new StringBuilder(32);sb.append(_firstCell.formatAsString());if(!_isSingleCell) {sb.append(CELL_DELIMITER);if(_lastCell.getSheetName() == null) {sb.append(_lastCell.formatAsString());} else {_lastCell.appendCellReference(sb);}}return sb.toString();}