Man pages matching name tshttptxnserverreqget in section 3ts:

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