How to use the feast.serving.ServingService_pb2.GetOnlineFeaturesRequest function in feast

def test_large_volume_retrieve_online_success(client, large_volume_dataframe):
    # Poll serving for feature values until the correct values are returned
    while True:
        time.sleep(1)

        response = client.get_online_features(
            entity_rows=[
                GetOnlineFeaturesRequest.EntityRow(
                    fields={
                        "customer_id": Value(
                            int64_val=large_volume_dataframe.iloc[0][
                                "customer_id"]
                        )
                    }
                )
            ],
            feature_refs=[
                "daily_transactions_large",
                "total_transactions_large",
            ],
        )  # type: GetOnlineFeaturesResponse

        if response is None:
            continue

def test_basic_retrieve_online_success(client, basic_dataframe):
    # Poll serving for feature values until the correct values are returned
    while True:
        time.sleep(1)

        client.set_project(PROJECT_NAME)

        response = client.get_online_features(
            entity_rows=[
                GetOnlineFeaturesRequest.EntityRow(
                    fields={
                        "customer_id": Value(
                            int64_val=basic_dataframe.iloc[0]["customer_id"]
                        )
                    }
                )
            ],
            feature_refs=[
                "daily_transactions",
                "total_transactions",
            ],
        )  # type: GetOnlineFeaturesResponse

        if response is None:
            continue

["my_project/my_feature_1:3",
                    "my_project3/my_feature_4:1",]
            entity_rows: List of GetFeaturesRequest.EntityRow where each row
                contains entities. Timestamp should not be set for online
                retrieval. All entity types within a feature
            default_project: This project will be used if the project name is
                not provided in the feature reference

        Returns:
            Returns a list of maps where each item in the list contains the
            latest feature values for the provided entities
        """
        self._connect_serving()

        return self._serving_service_stub.GetOnlineFeatures(
            GetOnlineFeaturesRequest(
                features=_build_feature_references(
                    feature_refs=feature_refs,
                    default_project=(
                        default_project if not self.project else self.project
                    ),
                ),
                entity_rows=entity_rows,
            )

def __init__(self, channel):
    """Constructor.

    Args:
      channel: A grpc.Channel.
    """
    self.GetFeastServingInfo = channel.unary_unary(
        '/feast.serving.ServingService/GetFeastServingInfo',
        request_serializer=feast_dot_serving_dot_ServingService__pb2.GetFeastServingInfoRequest.SerializeToString,
        response_deserializer=feast_dot_serving_dot_ServingService__pb2.GetFeastServingInfoResponse.FromString,
        )
    self.GetOnlineFeatures = channel.unary_unary(
        '/feast.serving.ServingService/GetOnlineFeatures',
        request_serializer=feast_dot_serving_dot_ServingService__pb2.GetOnlineFeaturesRequest.SerializeToString,
        response_deserializer=feast_dot_serving_dot_ServingService__pb2.GetOnlineFeaturesResponse.FromString,
        )
    self.GetBatchFeatures = channel.unary_unary(
        '/feast.serving.ServingService/GetBatchFeatures',
        request_serializer=feast_dot_serving_dot_ServingService__pb2.GetBatchFeaturesRequest.SerializeToString,
        response_deserializer=feast_dot_serving_dot_ServingService__pb2.GetBatchFeaturesResponse.FromString,
        )
    self.GetJob = channel.unary_unary(
        '/feast.serving.ServingService/GetJob',
        request_serializer=feast_dot_serving_dot_ServingService__pb2.GetJobRequest.SerializeToString,
        response_deserializer=feast_dot_serving_dot_ServingService__pb2.GetJobResponse.FromString,
        )

def add_ServingServiceServicer_to_server(servicer, server):
  rpc_method_handlers = {
      'GetFeastServingInfo': grpc.unary_unary_rpc_method_handler(
          servicer.GetFeastServingInfo,
          request_deserializer=feast_dot_serving_dot_ServingService__pb2.GetFeastServingInfoRequest.FromString,
          response_serializer=feast_dot_serving_dot_ServingService__pb2.GetFeastServingInfoResponse.SerializeToString,
      ),
      'GetOnlineFeatures': grpc.unary_unary_rpc_method_handler(
          servicer.GetOnlineFeatures,
          request_deserializer=feast_dot_serving_dot_ServingService__pb2.GetOnlineFeaturesRequest.FromString,
          response_serializer=feast_dot_serving_dot_ServingService__pb2.GetOnlineFeaturesResponse.SerializeToString,
      ),
      'GetBatchFeatures': grpc.unary_unary_rpc_method_handler(
          servicer.GetBatchFeatures,
          request_deserializer=feast_dot_serving_dot_ServingService__pb2.GetBatchFeaturesRequest.FromString,
          response_serializer=feast_dot_serving_dot_ServingService__pb2.GetBatchFeaturesResponse.SerializeToString,
      ),
      'GetJob': grpc.unary_unary_rpc_method_handler(
          servicer.GetJob,
          request_deserializer=feast_dot_serving_dot_ServingService__pb2.GetJobRequest.FromString,
          response_serializer=feast_dot_serving_dot_ServingService__pb2.GetJobResponse.SerializeToString,
      ),
  }
  generic_handler = grpc.method_handlers_generic_handler(
      'feast.serving.ServingService', rpc_method_handlers)
  server.add_generic_rpc_handlers((generic_handler,))