[libadwaita/wip/cdavis/header-suffix: 3/3] doc: Add suffix to preferences group images

[Alexander Mikhaylenko <alexm src gnome org>]

commit ae9458d7583c5a3579151c689aad2ebb3a930b69
Author: Christopher Davis <christopherdavis gnome org>
Date:   Tue Jan 25 02:24:01 2022 -0800

    doc: Add suffix to preferences group images

 doc/images/preferences-group-dark.png | Bin 7077 -> 7330 bytes
 doc/images/preferences-group.png      | Bin 7824 -> 8325 bytes
 doc/tools/data/preferences-group.ui   |  14 ++++++++++++++
 3 files changed, 14 insertions(+)
---
diff --git a/doc/images/preferences-group-dark.png b/doc/images/preferences-group-dark.png
index a6076380..7c3bbe58 100644
Binary files a/doc/images/preferences-group-dark.png and b/doc/images/preferences-group-dark.png differ
diff --git a/doc/images/preferences-group.png b/doc/images/preferences-group.png
index 2246db84..b369daa3 100644
Binary files a/doc/images/preferences-group.png and b/doc/images/preferences-group.png differ
diff --git a/doc/tools/data/preferences-group.ui b/doc/tools/data/preferences-group.ui
index 0272a997..e4789a16 100644
--- a/doc/tools/data/preferences-group.ui
+++ b/doc/tools/data/preferences-group.ui
@@ -13,6 +13,20 @@
         <property name="margin-bottom">12</property>
         <property name="margin-start">12</property>
         <property name="margin-end">12</property>
+        <property name="header-suffix">
+          <object class="GtkButton">
+            <property name="valign">center</property>
+            <property name="child">
+              <object class="AdwButtonContent">
+                <property name="icon-name">list-add-symbolic</property>
+                <property name="label" translatable="yes">Suffix</property>
+              </object>
+            </property>
+            <style>
+              <class name="flat"/>
+            </style>
+          </object>
+        </property>
         <child>
           <object class="AdwActionRow">
             <property name="title">Row Title</property>