I think the source of the confusion is the outdated copyright notice, e.g.,
// This file is part of Notepad++ project // Copyright (C)2006 Jens Lorenz <jens.plugin.npp@gmx.de> // . . .@ThosRTanner, just look at the git history and you’ll see that these files are not actually 17 years old.
git clone https://github.com/npp-plugins/plugintemplate.git cd plugintemplate git log -p -- src/DockingFeature/*.h