<node>
  <interface name="org.gtk.Notifications">
    <method name="AddNotification">
      <arg type="s" direction="in"/>
      <arg type="s" direction="in"/>
      <arg type="a{sv}" direction="in"/>
    </method>
    <method name="RemoveNotification">
      <arg type="s" direction="in"/>
      <arg type="s" direction="in"/>
    </method>
  </interface>
</node>