/usr/share/gvfs/remote-volume-monitors/udisks2.monitor is in gvfs-daemons 1.36.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | [RemoteVolumeMonitor]
Name=GProxyVolumeMonitorUDisks2
DBusName=org.gtk.vfs.UDisks2VolumeMonitor
IsNative=true
NativePriority=4
|