/**
* gtk_window_get_size:
* @window: a #GtkWindow
- * @width: (out) (nullable): return location for width, or %NULL
- * @height: (out) (nullable): return location for height, or %NULL
+ * @width: (out) (optional): return location for width, or %NULL
+ * @height: (out) (optional): return location for height, or %NULL
*
* Obtains the current size of @window.
*
/**
* gtk_window_get_position:
* @window: a #GtkWindow
- * @root_x: (out) (allow-none): return location for X coordinate of
+ * @root_x: (out) (optional): return location for X coordinate of
* gravity-determined reference point, or %NULL
- * @root_y: (out) (allow-none): return location for Y coordinate of
+ * @root_y: (out) (optional): return location for Y coordinate of
* gravity-determined reference point, or %NULL
*
* This function returns the position you need to pass to