Wifi Roaming support? B20x, B One etc

I’m trying to determine if some of my wifi APs (past and present) support 802.11k,v,r. The AP One AX Lite says (in the marketing text) that is supports the roaming features. But the APO-ENT doesn’t appear to mention it. The Balance 20x and B-One don’t appear to mention it either. Am I to assume that if I can’t find mention of it, then it doesn’t support it?