ayatana-indicator-application binary package in Ubuntu Mantic s390x

 This Ayatana System Indicator takes menus from external applications and
 place them in the panel / designated indicator area.
 .
 An application supporting indicator based panel applets provides its
 menu tree via the DBus bus org.kde.StatusNotifierWatcher (SNI). An
 application providing such an indicator item is called an AppIndicator.
 .
 This package provides an SNI AppIndicator service that proxies panel
 menu items from AppIndicator application to a renderer supporting the
 Ayatana System Indicators implementation. It accepts connections from
 any application built against either of the available appindicator
 libraries: Ayatana AppIndicators, Ubuntu AppIndicators, or Qt's
 QSystemTrayIcon API.
 .
 Ayatana Indicators are only available on desktop environments that
 provide a renderer for system indicators (such as MATE, Xfce, Lomiri,
 etc.).

Source package