/usr/share/applications/gnome-shell-extension-prefs.desktop is in gnome-shell 3.28.1-0ubuntu2.
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 10 11 12 13 | [Desktop Entry]
Type=Application
Name=Shell Extensions
Comment=Configure GNOME Shell Extensions
Exec=/usr/bin/gnome-shell-extension-prefs %u
X-GNOME-Bugzilla-Bugzilla=GNOME
X-GNOME-Bugzilla-Product=gnome-shell
X-GNOME-Bugzilla-Component=extensions
X-GNOME-Bugzilla-Version=3.28.1
Categories=GNOME;GTK;
OnlyShowIn=GNOME;
NoDisplay=true
X-Ubuntu-Gettext-Domain=gnome-shell
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