/usr/share/dbus-1/services/org.syncevolution.service is in syncevolution-dbus 1.5-0ubuntu12.
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=org.syncevolution
Exec=/usr/lib/x86_64-linux-gnu/syncevolution/syncevo-dbus-server
|