Man pages matching name tshttptxnnexthopaddrget in section 3ts:

TSHttpTxnNextHopAddrGet.3ts.en	debian 10 / trafficserver-dev
TSHttpTxnNextHopAddrGet.3ts.en	debian 11 / trafficserver-dev
TSHttpTxnNextHopAddrGet.3ts.en	debian 12 / trafficserver-dev