/usr/share/xfce4/panel-plugins/xfce4-equake-plugin.desktop is in xfce4-equake-plugin 1.3.8.1-2.
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 | [Xfce Panel]
Type=X-XFCE-PanelPlugin
Encoding=UTF-8
Name=equake
Comment=XFCE Panel plugin to monitor earthquakes
Icon=xfce4-equake-plugin-icon
X-XFCE-Exec=/usr/lib/x86_64-linux-gnu/xfce4/panel-plugins/xfce4-equake-plugin
X-XFCE-Unique=true
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