libdbusmenu-gtk-doc 12.10.3+14.04.20140319-0ubuntu1 (amd64 binary) in ubuntu trusty

 libdbusmenu passes a menu structure across DBus so that a program can
 create a menu simply without worrying about how it is displayed on the
 other side of the bus.
 .
 This package contains developer documentation for libdbusmenu-gtk.