/**
  * Forms report in excel file. Sum weight. Sum volume etc.
  *
  * @param sheet Sheet where write the items
  * @param c Container from where take the info
  * @param lastRow last row after all items were written method uses lastRow + 2 to write report in
  *     next 2 rows after all items of the container were written
  */
 private void setReport(Container c, int lastRow) {
   String[] reportHeadings = {
     "Суммарный вес", // 6
     "Суммарный объем", // 7
     "Остаток вес", // 8
     "Остаток объем" // 9
   };
   double[] values = {
     c.getWeight(),
     c.getVolume(),
     c.getWeightLimit() - c.getWeight(),
     c.getVolumeLimit() - c.getVolume()
   };
   int dataCell = 5;
   int valuesIndex = 0; // index of the array of doubles(weigh, volume, etc)
   lastRow++;
   Row headings = outputSheet.createRow(lastRow);
   lastRow += 2;
   Row data = outputSheet.createRow(lastRow);
   for (String report : reportHeadings) {
     Cell heading = headings.createCell(dataCell);
     heading.setCellValue(report);
     Cell dataCellValue = data.createCell(dataCell);
     dataCellValue.setCellValue(values[valuesIndex]);
     dataCell++;
     valuesIndex++;
   }
 }