$parent
$parent : \PhpOffice\PhpSpreadsheet\Worksheet\Worksheet
\PhpOffice\PhpSpreadsheet\Worksheet\Worksheet.
getCellIterator(integer $startRow = 1, integer $endRow = null) : \PhpOffice\PhpSpreadsheet\Worksheet\ColumnCellIterator
Get cell iterator.
integer | $startRow | The row number at which to start iterating |
integer | $endRow | Optionally, the row number at which to stop iterating |