code: protected void createFakeTemplateCellsForEmptyOnes(Range oneRowRange,
                                                         Map<CellReference, Cell> cellsForOneRowRange,
                                                         List<Cell> templateCells) {
          if (oneRowRange.toCellReferences().size() != templateCells.size()) {
              final HashBiMap<CellReference, Cell> referencesToCells = HashBiMap.create(cellsForOneRowRange);
  
              for (CellReference cellReference : oneRowRange.toCellReferences()) {
                  if (!cellsForOneRowRange.containsKey(cellReference)) {
                      Cell newCell = Context.getsmlObjectFactory().createCell();
                      newCell.setV(null);
                      newCell.setT(STCellType.STR);
                      newCell.setR(cellReference.toReference());
                      templateCells.add(newCell);
                      referencesToCells.put(cellReference, newCell);
                  }
              }
  
              templateCells.sort((o1, o2) -> {
                  CellReference cellReference1 = referencesToCells.inverse().get(o1);
                  CellReference cellReference2 = referencesToCells.inverse().get(o2);
                  return cellReference1.compareTo(cellReference2);
              });
          }
      }
docs: XLSX document does not store empty cells and it might be an issue for formula calculations and etc.
  So we need to create fake template cell for each empty cell.