niucloud-admin/niucloud/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Cell/AddressRange.php

<?php

namespace PhpOffice\PhpSpreadsheet\Cell;

interface AddressRange
{
    public const MAX_ROW = 1048576;

    public const MAX_COLUMN = 'XFD';

    public const MAX_COLUMN_INT = 16384;

    /**
     * @return mixed
     */
    public function from();

    /**
     * @return mixed
     */
    public function to();

    public function __toString(): string;
}