/usr/share/applications/mount-archive.desktop is in nautilus 1:3.18.4.is.3.14.3-0ubuntu4.
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 6 7 8 9 | [Desktop Entry]
Name=Archive Mounter
Exec=/usr/lib/gvfs/gvfsd-archive file=%u
MimeType=application/x-cd-image;application/x-bzip-compressed-tar;application/x-compressed-tar;application/x-tar;application/x-cpio;application/zip;
Terminal=false
StartupNotify=false
Type=Application
NoDisplay=true
X-Ubuntu-Gettext-Domain=nautilus
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