Comment 4 for bug 1503758

those are not going to apply to our codebase though, they are based on the refactoring done in https://git.gnome.org/browse/gnome-settings-daemon/commit/plugins/common/gsd-device-mapper.c?id=bf2f0d5d955f9fe5ca9f880e9f52246016e60e79 which was after we forked and that we didn't rebase on