/usr/ is in libkf5notifications-dev 5.44.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/KF5/
/usr/include/KF5/KNotifications/
/usr/include/KF5/KNotifications/KNotification
/usr/include/KF5/KNotifications/KNotificationPlugin
/usr/include/KF5/KNotifications/KNotificationRestrictions
/usr/include/KF5/KNotifications/KNotifyConfig
/usr/include/KF5/KNotifications/KPassivePopup
/usr/include/KF5/KNotifications/KStatusNotifierItem
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/
/usr/include/KF5/KNotifications/knotification.h
/usr/include/KF5/KNotifications/knotificationplugin.h
/usr/include/KF5/KNotifications/knotificationrestrictions.h
/usr/include/KF5/KNotifications/knotifications_export.h
/usr/include/KF5/KNotifications/knotifyconfig.h
/usr/include/KF5/KNotifications/kpassivepopup.h
/usr/include/KF5/KNotifications/kstatusnotifieritem.h
/usr/include/KF5/knotifications_version.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/KF5Notifications/
/usr/lib/x86_64-linux-gnu/cmake/KF5Notifications/KF5NotificationsConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Notifications/KF5NotificationsConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Notifications/KF5NotificationsTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Notifications/KF5NotificationsTargets.cmake
/usr/lib/x86_64-linux-gnu/qt5/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/qt_KNotifications.pri
/usr/share/
/usr/share/dbus-1/
/usr/share/dbus-1/interfaces/
/usr/share/dbus-1/interfaces/kf5_org.kde.StatusNotifierItem.xml
/usr/share/dbus-1/interfaces/kf5_org.kde.StatusNotifierWatcher.xml
/usr/share/doc/
/usr/share/doc/libkf5notifications-dev/
/usr/share/doc/libkf5notifications-dev/copyright
/usr/lib/x86_64-linux-gnu/libKF5Notifications.so
/usr/share/doc/libkf5notifications-dev/changelog.Debian.gz