libdbusmenu-gtk3-4 18.10.20180917~bzr492+repack1-3ubuntu1 (s390x binary) in ubuntu lunar

 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 shared libraries to be used by GTK-3+ applications.