43   def an_rpc(req, call)  argument
50   def a_client_streaming_rpc(call)  argument
59   def a_server_streaming_rpc(_req, call)  argument
64   def a_bidi_rpc(requests, call)  argument
77   def request_response(request:, call:, method:)  argument
85   def client_streamer(call:, method:)  argument
96   def server_streamer(request:, call:, method:)  argument
103   def bidi_streamer(requests:, call:, method:)  argument
116   def request_response(request:, call:, method:, metadata: {})  argument
124   def client_streamer(requests:, call:, method:, metadata: {})  argument
135   def server_streamer(request:, call:, method:, metadata: {})  argument
143   def bidi_streamer(requests:, call:, method:, metadata: {})  argument