This file is indexed.

/usr/share/applications/screensavers/epicycle.desktop is in xscreensaver-data-extra 5.36-1ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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[Desktop Entry]
Name=Epicycle
Exec=/usr/lib/xscreensaver/epicycle -root
TryExec=/usr/lib/xscreensaver/epicycle
Comment=This draws the path traced out by a point on the edge of a circle. That circle rotates around a point on the rim of another circle, and so on, several times. These were the basis for the pre-heliocentric model of planetary motion. http://en.wikipedia.org/wiki/Deferent_and_epicycle Written by James Youngman.
StartupNotify=false
Terminal=false
Type=Application
Categories=Screensaver;
OnlyShowIn=MATE;