Vendor/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/ColumnIterator.php
public function seek($column = 'A')
    {
        $column = Coordinate::columnIndexFromString($column);
        if (($column < $this->startColumnIndex) || ($column > $this->endColumnIndex)) {
            throw new PhpSpreadsheetException("Column $column is out of range ({$this->startColumnIndex} - {$this->endColumnIndex})");
        }
        $this->currentColumnIndex = $column;

        return $this;
    }
public function seek($column = 'A')
    {
        $column = Coordinate::columnIndexFromString($column);
        if (($column < $this->startColumnIndex) || ($column > $this->endColumnIndex)) {
            throw new PhpSpreadsheetException("Column $column is out of range ({$this->startColumnIndex} - {$this->endColumnIndex})");
        }
        $this->currentColumnIndex = $column;

        return $this;
    }
Set the column pointer to the selected column.

@param string $column The column address to set the current pointer at

@throws PhpSpreadsheetException

@return ColumnIterator