code: def add_NNServiceServicer_to_server(servicer, server):
      rpc_method_handlers = {
          "train": grpc.unary_unary_rpc_method_handler(
              servicer.train,
              request_deserializer=nn__service__pb2.TrainRequest.FromString,
              response_serializer=nn__service__pb2.TrainResponse.SerializeToString,
          ),
          "evaluate": grpc.unary_unary_rpc_method_handler(
              servicer.evaluate,
              request_deserializer=nn__service__pb2.EvaluateRequest.FromString,
              response_serializer=nn__service__pb2.EvaluateResponse.SerializeToString,
          ),
          "predict": grpc.unary_unary_rpc_method_handler(
              servicer.predict,
              request_deserializer=nn__service__pb2.PredictRequest.FromString,
              response_serializer=nn__service__pb2.PredictResponse.SerializeToString,
          ),
          "upload_meta": grpc.unary_unary_rpc_method_handler(
              servicer.upload_meta,
              request_deserializer=nn__service__pb2.UploadMetaRequest.FromString,
              response_serializer=nn__service__pb2.UploadMetaResponse.SerializeToString,
          ),
          "upload_file": grpc.stream_unary_rpc_method_handler(
              servicer.upload_file,
              request_deserializer=nn__service__pb2.ByteChunk.FromString,
              response_serializer=nn__service__pb2.UploadMetaResponse.SerializeToString,
          ),
          "save_server_model": grpc.unary_unary_rpc_method_handler(
              servicer.save_server_model,
              request_deserializer=nn__service__pb2.SaveModelRequest.FromString,
              response_serializer=nn__service__pb2.SaveModelResponse.SerializeToString,
          ),
          "load_server_model": grpc.unary_unary_rpc_method_handler(
              servicer.load_server_model,
              request_deserializer=nn__service__pb2.LoadModelRequest.FromString,
              response_serializer=nn__service__pb2.LoadModelResponse.SerializeToString,
          ),
      }
      generic_handler = grpc.method_handlers_generic_handler(
          "nn.NNService", rpc_method_handlers
      )
      server.add_generic_rpc_handlers((generic_handler,))
  
imports: import grpc
  import nn_service_pb2
label_desc: Use image node_id 1 for calling a global function with example usage: add_NNServiceServicer_to_server(servicer, server) without return types