code: def create_series(self, num_series, batch_size=5000):
          
          datapoints = []
          for _ in range(num_series):
              name = self.dummy_seriesname()
              datapoints.append(self.create_datapoint(name, ["value"], [[1]]))
          for data in tqdm(self.batch(datapoints, batch_size)):
              self.client.write_points(data)
docs: Write one data point for each series name to initialize the series
          :param num_series: Number of different series names to create
          :param batch_size: Number of series to create at the same time
          :return: