/usr/share/dbus-1/services/org.gnome.FileRoller.service is in file-roller 3.10.2.1-0ubuntu4.
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.gnome.ArchiveManager1
Exec=/usr/bin/file-roller --service
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