<?php

namespace PhpOffice\PhpSpreadsheet\Writer\Ods;


< use PhpOffice\PhpSpreadsheet\Spreadsheet;
< 


class Thumbnails extends WriterPart
{
    /**
     * Write Thumbnails/thumbnail.png to PNG format.
     *

<      * @param Spreadsheet $spreadsheet
<      *


     * @return string XML Output
     */

<     public function writeThumbnail(Spreadsheet $spreadsheet = null)



>     public function write(): string


    {
        return '';
    }
}