Adding subfolders in OPENHAB_CONF/icons/classic

Environment: openHAB2.5 M5 on RPi3B+ with openHABian Buster

Is it possible to add subfolders in ${OPENHAB_CONF}/icons/classic and to refer to them in sitemaps or items files? I’d like to unclutter my stash of icons…

Not sure…
Have you tried?

In OH1 it was possible, so you were able to group your icons by families in subfolders. This disappeared in OH2