/**
* _gtk_xembed_send_message:
- * @recipient: window to which to send the window, or %NULL
+ * @recipient: (allow-none): window to which to send the window, or %NULL
* in which case nothing will be sent
* @message: type of message
* @detail: detail field of message
/**
* _gtk_xembed_send_focus_message:
- * @recipient: window to which to send the window, or %NULL
+ * @recipient: (allow-none): window to which to send the window, or %NULL
* in which case nothing will be sent
* @message: type of message
* @detail: detail field of message