libportal-tests-gtk3 0.6-2 (s390x binary) in ubuntu kinetic

 libportal provides GIO-style C APIs for most Flatpak portals' D-Bus
 interfaces. It is primarily intended for installation in Flatpak runtimes,
 where applications can use it to interact with portals; it can also be
 used to test the portal services.
 .
 See the xdg-desktop-portal package's description for more information
 about portals.
 .
 This package contains the portal-test-gtk3 application, and will contain
 "as-installed" test programs if they are added.