/usr/share/dbus-1/interfaces/ is in libkf5akonadiserver-dev 4:16.04.3-4.
This file is owned by root:root, with mode 0o755.
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/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.Agent.Control.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.Agent.Search.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.Agent.Status.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.AgentManager.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.ControlManager.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.DebugInterface.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.NotificationManager.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.NotificationSource.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.Preprocessor.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.Resource.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.Server.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.StorageDebugger.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.Tracer.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Akonadi.TracerNotification.xml