gtk/testsuite/reftests/style-properties-only-child.ui

<?xml version="1.0" encoding="UTF-8"?>
<interface>
  <object class="GtkWindow" id="window1">
    <property name="decorated">0</property>
    <property name="width_request">300</property>
    <property name="height_request">300</property>
    <child>
      <object class="GtkBox" id="box1">
        <property name="orientation">vertical</property>
        <child>
          <object class="GtkButton" id="button1">
            <property name="label">Foo</property>
            <style>
              <class name="only-child-notref"/>
            </style>
          </object>
        </child>
      </object>
    </child>
  </object>
</interface>