[gtk/gtk-3-24: 3/4] Add `Since` marker for `GtkHeaderBarAccessible`

[Matthias Clasen <matthiasc src gnome org>]

commit 133ff7687a67d2be5104884c2d0816da1dda4f44
Author: Sebastian Dröge <sebastian centricular com>
Date:   Sun Jan 30 19:09:20 2022 +0200

    Add `Since` marker for `GtkHeaderBarAccessible`
    
    It was added in 3.24.11.

 gtk/a11y/gtkheaderbaraccessible.h | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/gtk/a11y/gtkheaderbaraccessible.h b/gtk/a11y/gtkheaderbaraccessible.h
index fca9428a94..3d3a385d7f 100644
--- a/gtk/a11y/gtkheaderbaraccessible.h
+++ b/gtk/a11y/gtkheaderbaraccessible.h
@@ -37,6 +37,11 @@ typedef struct _GtkHeaderBarAccessible        GtkHeaderBarAccessible;
 typedef struct _GtkHeaderBarAccessibleClass   GtkHeaderBarAccessibleClass;
 typedef struct _GtkHeaderBarAccessiblePrivate GtkHeaderBarAccessiblePrivate;
 
+/**
+ * GtkHeaderBarAccessible:
+ *
+ * Since: 3.24.11
+ */
 struct _GtkHeaderBarAccessible
 {
   GtkContainerAccessible parent;