[gnome-builder] layout: add nullbale to G-I parameter

[Christian Hergert <chergert src gnome org>]

commit fc4499befa8e82c578c7932056136b13cff61ba7
Author: Christian Hergert <chergert redhat com>
Date:   Tue Dec 15 15:06:32 2015 -0800

    layout: add nullbale to G-I parameter

 libide/ide-layout-pane.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/libide/ide-layout-pane.c b/libide/ide-layout-pane.c
index b55446f..403df61 100644
--- a/libide/ide-layout-pane.c
+++ b/libide/ide-layout-pane.c
@@ -363,6 +363,14 @@ ide_layout_pane_set_position (IdeLayoutPane   *self,
     }
 }
 
+/**
+ * ide_layout_pane_add_page:
+ * @self: An #IdeLayoutPane
+ * @page: A #GtkWidget
+ * @title: the title for the page
+ * @icon_name: (nullable): the icon name
+ *
+ */
 void
 ide_layout_pane_add_page (IdeLayoutPane *self,
                           GtkWidget     *page,