<?php

namespace PhpOffice\PhpSpreadsheet\Collection;

use PhpOffice\PhpSpreadsheet\Settings;
use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;

abstract class CellsFactory
{
    /**
     * Initialise the cache storage.
     *

<      * @param Worksheet $parent Enable cell caching for this worksheet



>      * @param Worksheet $worksheet Enable cell caching for this worksheet


     *

<      * @return Cells


     * */

<     public static function getInstance(Worksheet $parent)



>     public static function getInstance(Worksheet $worksheet): Cells


    {

<         return new Cells($parent, Settings::getCache());



>         return new Cells($worksheet, Settings::getCache());


    }
}