34     pub fn unary_call<Req, Resp>(  in unary_call()
36         method: &Method<Req, Resp>,  in unary_call()
37         req: &Req,  in unary_call()
44     pub fn unary_call_async<Req, Resp>(  in unary_call_async()
46         method: &Method<Req, Resp>,  in unary_call_async()
47         req: &Req,  in unary_call_async()
56     pub fn client_streaming<Req, Resp>(  in client_streaming()
58         method: &Method<Req, Resp>,  in client_streaming()
60     ) -> Result<(ClientCStreamSender<Req>, ClientCStreamReceiver<Resp>)> {  in client_streaming()
67     pub fn server_streaming<Req, Resp>(  in server_streaming()
69         method: &Method<Req, Resp>,  in server_streaming()
70         req: &Req,  in server_streaming()
81     pub fn duplex_streaming<Req, Resp>(  in duplex_streaming()
83         method: &Method<Req, Resp>,  in duplex_streaming()
85     ) -> Result<(ClientDuplexSender<Req>, ClientDuplexReceiver<Resp>)> {  in duplex_streaming()