[Glade-users] Where is GtkFlowBox ?

[brad at bradcan.homelinux.com (Charles Bradshaw)]

I have installed the latest glade 3.20 with the expectation of
GtkFlowBox, however I see no such object in the catalog.

I see /usr/local/share/glade/gtk+.xml which contains the line:

<glade-widget-class use-placeholders="False" since="3.12"
name="GtkFlowBox" generic-name="flowbox" title="Flow Box">

And icons named widget-gtk-flowbox.png

Do I have to do some other installation to make flow boxes available in
glade?