Vendor/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/Column.php
public function getCellIterator($startRow = 1, $endRow = null)
    {
        return new ColumnCellIterator($this->parent, $this->columnIndex, $startRow, $endRow);
    }
public function getCellIterator($startRow = 1, $endRow = null)
    {
        return new ColumnCellIterator($this->parent, $this->columnIndex, $startRow, $endRow);
    }
Get cell iterator.

@param int $startRow The row number at which to start iterating
@param int $endRow Optionally, the row number at which to stop iterating

@return ColumnCellIterator