How to duplicate order message as a note during check out ?

[pojezdy.eu]

Hello all,

would someone recommend me how to update PaymentModule.php (I guess that should be the one, as far as I search over forums) to copy the message content into the note stored in the note cell of ps_order table?

I guess it should be somewhere here ...

                    if (!empty($message)) {
                        $msg = new Message();
                        $message = strip_tags($message, '<br>');
                        if (Validate::isCleanHtml($message)) {
                            if (self::DEBUG_MODE) {
                                PrestaShopLogger::addLog('PaymentModule::validateOrder - Message is about to be added', 1, null, 'Cart', (int) $id_cart, true);
                            }
                            $msg->message = $message;
                            $msg->id_cart = (int) $id_cart;
                            $msg->id_customer = (int) ($order->id_customer);
                            $msg->id_order = (int) $order->id;
                            $msg->private = 1;
                            $msg->add();
                        }
                    }

[pojezdy.eu]

PrestaShop version is 1.7.