/**
  * Autosize column for document
  * @param  LaravelExcelWorksheet $sheet
  * @return LaravelExcelWorksheet
  */
 public function autosizeColumn($sheet)
 {
     if ($columns = $sheet->getAutosize()) {
         if (is_array($columns)) {
             $sheet->setAutoSize($columns);
         } else {
             $toCol = $sheet->getHighestColumn();
             $toCol++;
             for ($i = 'A'; $i !== $toCol; $i++) {
                 $sheet->getColumnDimension($i)->setAutoSize(true);
             }
             $sheet->calculateColumnWidths();
         }
     }
     return $sheet;
 }