class MyGrpcService(GrpcService, summator2_pb2_grpc.SummatorServicer):
    
    def __init__(self):
        super().__init__('my_data_v1')
    
    def add_servicer_to_server(self, server):
        summator2_pb2_grpc.add_SummatorServicer_to_server(self, server)
        
    def register(self):
        self._register_method("sum", None, self.__sum2)
        
    def __sum2(self, number: summator2_pb2.Number1, context: ServicerContext):
        res = summator.sum(number.value1, number.value2)
        return summator2_pb2.Number2(value1=res)