How to properly override protected static function vendor class in Laravel?

Question

PHP

I need to override the class from the vendor folder. The code below throws an error Declaration of Method should be compatible with Parent Method

namespace App\PhpExcelTemplator;
use alhimik1986\PhpExcelTemplator\PhpExcelTemplator as ParentPhpExcelTemplator;
class PhpExcelTemplator extends ParentPhpExcelTemplator
{
  protected static function getWriter(Spreadsheet $spreadsheet)
  {
              return IOFactory::createWriter($spreadsheet, 'Xlsx');
  }
}

The method itself is still identical. They write on the network that it is necessary to override without protected - I tried static function getWriter () - the result is the same.