Vendor/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Collection/Cells.php
public function has($pCoord)
    {
        if ($pCoord === $this->currentCoordinate) {
            return true;
        }

        // Check if the requested entry exists in the index
        return isset($this->index[$pCoord]);
    }
public function has($pCoord)
    {
        if ($pCoord === $this->currentCoordinate) {
            return true;
        }

        // Check if the requested entry exists in the index
        return isset($this->index[$pCoord]);
    }
Whether the collection holds a cell for the given coordinate.

@param string $pCoord Coordinate of the cell to check

@return bool