SNMPd WiFi info

I see there's a patch in the net-snmp package which adds support for WiFi 802.11 info, before diving into reading that code, I wanted to ask here if is there any documentation regarding how to use that?

We're implementing support for SNMP in OpenWISP and would be great to pull the information of WiFi stations, I still haven't been able to figure out if that patch includes support for this information in net-snmpd or not. Anyone can help?

Added some notes: