/usr/share/dbus-1/services/virt-manager.service is in virt-manager 0.9.5-1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | [D-BUS Service]
Name=com.redhat.virt.manager
Exec=/usr/libexec/virt-manager-launch
|