/usr/share/applications/foo-yc20.desktop is in foo-yc20 1.3.0-1.
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 | [Desktop Entry]
Name=Foo YC20
GenericName=YC20
Version=1.0
Comment=Organ synthesizer
Exec=foo-yc20
Icon=/usr/share/foo-yc20/graphics/icon.png
Terminal=false
Type=Application
Categories=AudioVideo;Audio
|