public function getInputStream()
    {
        if (0 === func_num_args() || func_get_arg(0)) {
            @trigger_error(sprintf('The %s() method is deprecated since version 3.2 and will be removed in 4.0. Use %s::getStream() instead.', __METHOD__, StreamableInputInterface::class), E_USER_DEPRECATED);
        }

        return $this->inputStream;
    }