/usr/share/app-install/desktop/stella:stella.desktop is in app-install-data 0.12.04.4.
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 14 | [Desktop Entry]
X-AppInstall-Package=stella
X-AppInstall-Popcon=95
X-AppInstall-Section=universe
Name=Stella
Comment=A multi-platform Atari 2600 emulator
Exec=stella %f
Icon=stella
Terminal=false
Type=Application
Categories=Application;Emulator;Game;
X-Ubuntu-Gettext-Domain=app-install-data
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