/usr/share/applications/xpra_launcher.desktop is in xpra 0.12.3+dfsg-1ubuntu1.
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 | [Desktop Entry]
Name=Xpra Launcher
Comment=Connect to an Xpra session
TryExec=xpra_launcher
Exec=xpra_launcher
Icon=xpra
Terminal=false
Type=Application
StartupNotify=false
Categories=Network;
MimeType=text/x-xpraconfig;
|