/usr/share/xubuntu/applications/xfce4-terminal.desktop is in xubuntu-default-settings 18.04.6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | [Desktop Entry]
Type=Application
Exec=xfce4-terminal
NoDisplay=true
|